McNally v Molex Ireland Ltd. & anor [2019] IECA 284 (13 November 2019)

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JUDGMENT of Mr Justice Edwards delivered on the 13th of November, 2019.

1. This is an appeal against the ex tempore judgment and Order of Noonan J. dated the 21st

of May, 2019, refusing to grant discovery to the appellant/plaintiff in the following terms:

“Any documentation in the defendants’ possession or within the defendants’

procurement relating to all claims of the occurrence of any neurodegenerative

disorders or injuries from the use of Trichloroethylene, Gizer or Gun Kat at any of

the defendants’ production or workplace facilities worldwide.”

2. For convenience, the appellant/plaintiff will be referred to throughout this judgment

simply as “the plaintiff”; and the respondents/defendants will be referred to simply as

“the defendants”, or if referred to individually as “the first named defendant” or “the

The context in which the disputed category of discovery was sought

3. The application for discovery of this category of documents arises in the context of

personal injuries proceedings brought by the plaintiff in the following circumstances. The

first named defendant manufactures and repairs products for the electronics industry at

its plant at Shannon, County Clare. The plaintiff, who is a mechanical engineer, claims to

have been employed, by the first named defendant (a matter that is disputed), at that

plant from February 1983 until January 1990. It is pleaded that the second named

defendant is the parent company of the first named defendant with a registered address

in the United States of America and that at all material times the second named

defendant controlled and supervised the operations of the first named defendant.

4. The plaintiff’s case, as pleaded, is that he suffered personal injuries, loss and damage as

a result of exposure to a chemical solvent, i.e. trichloroethylene, in the course of his work

at the said plant at Shannon, County Clare; which exposure, it is alleged, was caused by

the negligence, breach of duty and breach of contract of the defendants, and each of

them, their servants or agents. This the “wrong” alleged against the defendants.

5. Various particulars are pleaded as to the acts of the defendants, their servants or agents

said to constitute the alleged wrong and concerning the circumstances in which the

alleged wrong was committed. Amongst these it is pleaded that the plaintiff’s work was to

repair tools and machine parts in a small workroom within the production plant. It is

further contended that for a minimum of six hours per day the plaintiff’s work was

confined to this small workroom and that the plaintiff worked an average of 48 hours per

week in shifts of either 8 or 12 hours. It is pleaded that the plaintiff worked at a tool

repair bench and that before, during and after the repair work carried out by him, tools

and machine parts were cleaned in a tool cleaning tank within the workroom. The plaintiff

contends that this tank was directly beside his repair bench and that it contained a

chemical solvent known as trichloroethylene, otherwise known as TCE, and also known as

“trike”, which was pumped under pressure onto the tools and machine parts which had

been placed on a mesh within the tank for cleaning, before being returned to a reservoir

and recirculated in the same manner until the process was complete. The plaintiff alleges

that when this tank was uncovered, the workroom, and those present within it, were

exposed to trichloroethylene vapour. It is pleaded that the plaintiff and his colleagues

were required to stand at this tank while cleaning the tools in trichloroethylene with their

bare hands, and all the while breathing in solvent vapour. It is pleaded that the plaintiff

was exposed to trichloroethylene vapour at concentrations of between 1000 and 8900

mg/m³, and that this was at least twice the occupational exposure limit permitted at that

time. It is further pleaded that the workroom was not ventilated with fresh air and that no

air extraction system was in place. The plaintiff claims to have been exposed to

trichloroethylene at these high levels for a period of seven years and that in consequence

6. The personal-injury summons goes on to set forth some twenty six specific allegations of

negligence and breach of duty designated (a) to (z) respectively. Amongst these are the

following pleas which may, inter alia, be of relevance to the category of discovery in

(a) exposing the plaintiff to trichloroethylene, a known neurotoxin;

(b) exposing the plaintiff to trichloroethylene at levels that were unsafe;

(n) failing to issue the plaintiff with any or any appropriate safety guidelines or

otherwise to train and instruct him on the safe use of trichloroethylene;

(o) failing to protect the health and safety of the plaintiff as an employee, and in

particular failing to consider and evaluate the health risks posed by the use of

(p) failing to provide the plaintiff with any direction or instruction on how the job was

(r) failing to instruct or to properly instruct the plaintiff in the safe use of a neurotoxic

(x) failing to warn the plaintiff of the dangers of being exposed to trichloroethylene;

(z) at the time of the plaintiff’s employment at the defendant’s facility, the

neurotoxicity of trichloroethylene was well understood in the industry, as was the

need to protect employees from breathing its fumes and allowing absorption

through the skin. The defendants’ efforts at ventilating the plaintiff’s workspace

from noxious fumes consisted of removing some ceiling tiles in the summer

months. In or about 1985 when the workspace was relocated to a remodelled

workspace with the addition of blower heaters and coolers, the defendants failed to

avail of the opportunity to provide mechanical extraction ventilation and/or modify

the work process. In respect of the cleaning tank, the defendants’ instructions were

merely to keep her hinged and unsealed lid thereon when not being used for

cleaning tools. In the circumstances there was an egregious and wilful disregard for

7. The Personal Injuries Summons in this case is dated the 2nd of June, 2015. A Defence

was filed on behalf of the defendants on the 5th of May, 2016. This contains a preliminary

objection asserting that the plaintiff’s claim is statute barred. Without prejudice to that,

the Defence is essentially a traverse of the plaintiff’s claim and it puts the plaintiff on

proof of all of the essential components of his claim, including, but not confined to; proof

of all particulars of the acts of the defendants allegedly constituting the wrong, proof of

the particulars of the circumstances relating to the alleged commission of the wrong,

proof of the particulars of negligence and/or breach of duty and/or breach of contract

alleged on the part of the defendants, their servants or agents, and proof of the

particulars of injuries allegedly sustained by the plaintiff. It denies inter alia that the

plaintiff’s development of Parkinson’s disease has anything to do with his employment

history. Further, it is asserted by way of substantive defence that the plaintiff was not in

fact employed at the material times by the defendants but rather was employed by

another company, Molex Illinois S. A. Geneve; and that the defendants are not liable for

or responsible in law for any negligence, breach of duty or breach of contract on the part

8. On the 8th of May, 2017, the solicitors for the plaintiff wrote to the solicitors for the

defendant seeking voluntary discovery pursuant to Order 31 Rule 12 of the Rules of the

Superior Courts 1986 (as substituted by the Rules of the Superior Courts (No 2)

(Discovery) 1999 [SI 233 of 1999] of fourteen categories of documents, designated “A” to

9. On the same date the solicitors for the plaintiff wrote to the solicitors for the defendant

seeking further and better particulars of the matters contained in the defendants Defence

7. Please confirm for the duration of the plaintiff’s employment at the production plant

known as Molex Shannon, Co. Clare, the yearly quantities of Trichloroethylene

purchased for use at the production plant known as Molex, Shannon, Co. Clare and

10. Please confirm the names, types and quantities of all chemicals, detergents,

cleaning agents and solvents purchased and used at the production plant known as

Molex, Shannon, Co. Clare and in particular the chemicals, detergents and cleaning

agents which the plaintiff was required to use in the course of his employment.

10. By a subsequent letter dated the 22nd of May, 2018, the solicitors for the plaintiff also

sought voluntary discovery of a fifteenth category of documents, designated “O”.

11. By late summer of 2018 the defendants had not yet made the voluntary discovery sought.

In the circumstances the plaintiff issued a Notice of Motion to compel discovery on the 4th

of September, 2018. The order under appeal arises from the hearing of that motion and

we will return to it in due course. Before doing so, however, it is necessary to outline

12. Subsequent to the issuance of this motion, but prior to the 7th of May, 2019, the

defendants delivered undated replies to the plaintiffs request for particulars dated the 8th

of May, 2017. The replies to queries numbers 7 and 10, respectively, were as follows:

7. The duration of the plaintiff’s employment at the production plant known as Molex,

Shannon, Co. Clare is within the knowledge of the plaintiff. The defendants do not

have any records which indicate whether it ever purchased Trichloroethylene for

any purpose. Accordingly, in the event that the defendants did purchase

Trichloroethylene it does not have records that indicate the yearly quantities

purchased or the purposes for which it was purchased during the period of the

10. The only cleaning agent within the defendants’ knowledge which was purchased

and used at the production plant was “Gizer”. The defendants believe that another

cleaning agent “Gun Kat” may have been used at one stage but this cannot be

13. Following receipt of these replies, the solicitors for the plaintiff wrote to the solicitors for

the defendant on the 7th of May 2019, seeking voluntary discovery of yet further

documents, involving in effect putting forward a recast and extended version of the

existing fourteenth category, i.e., “N”, and adding a new sixteenth category, respectively.

This was in circumstances where, notwithstanding the earlier requests for voluntary

discovery, the defendant had still not made any discovery at all up to that point, and the

14. Although the plaintiff’s solicitor’s letter of the 7th of May, 2019, does not specifically do

so, it is proposed both for convenience and for consistency to designate the additional

requests for voluntary discovery contained therein as categories “N(Ext)” and “P”

N(Ext): “any documentation in your possession or within your procurement relating to

all claims of the occurrence of any neurodegenerative disorders or injuries from the

use of Trichloroethylene, Gizer or Gun Kat at any of your production or workplace

P: “any documentation in your possession or in your procurement relating to the

degreasing tank referred to in the Personal Injuries Summons, specifically in

relation to the manufacture of the said degreasing tank, who made it, what model it

15. The plaintiff’s motion for discovery came on for hearing approximately two weeks later on

the 21st of May, 2019. Through a process of negotiation engaged in in advance of the

hearing, and arising from which there was ultimately considerable agreement between the

parties, an order for discovery in respect of certain of the categories designated “A” to

“M”, and “O” and “P”, inclusive, was no longer pressed for by the plaintiff; and the scope

of the discovery to be made by the defendants in respect of what then remained of those

categories was also limited in some instances. There is no controversy in respect of any of

that. The matters in respect of which it was agreed there would be discovery ultimately

became the subject of consent orders, and they form no part of this appeal.

16. However, it did not prove possible for the parties to reach agreement in respect of

category “N (Ext)”. This was notwithstanding an offer by the plaintiff made in the course

of the hearing before the High Court to limit the geographical scope of the request from

worldwide to “Europe and North America” and, if necessary, to further limit it to “Ireland

and North America”. Accordingly, the court was required to rule in respect of category “N

(Ext)” and, as previously stated, the outcome was a refusal to grant discovery in respect

17. It should be recorded at this point, as it may become a matter of significance, that the

defendants did not file any affidavit in reply to the plaintiff’s motion and sought to rely

18. This court has been provided with a transcript of the hearing before the High Court on the

21st of May, 2019, including the ex tempore judgment of the High Court judge. Having

outlined the background to the motion, and the nature of the discovery being sought, the

“Now in the course of argument before me this morning, Mr. O’Donoghue, leading

counsel for the plaintiff, has indicated that he is prepared to confine that category

without limit as to time, but to Europe and North America, rather than purely

worldwide and, indeed, I think if necessary he said to Ireland and North America.

No replying affidavit has been delivered by the defendants but I think -- and

although Mr. O’Donoghue pointed to that fact, I don’t think the defendants can

really be criticised to the extent that the motion issued in this matter that is now

before the court was issued on the 4th of September 2018, long before this

particular category, as I say, in very recent weeks has been sought by the plaintiff.

However, it appears not to be in real dispute between the parties that, as I’ve said,

the defendants are part of a very substantial conglomerate with facilities all over

the world and I think I’m entitled to assume therefore that potentially a huge

number of documents would have to be interrogated and searched by the

defendants going back at least 36 years and of course, possibly longer than that

because documents prior to the employment of the plaintiff could be potentially

relevant to the category that has been sought, so it is a somewhat potentially, well

I will say infinite, but certainly a very very long period of time indeed..

It seems to me that there have been very many recent judicial criticisms of the

discovery process as it currently stands. The time, cost and effort involved in

making discovery is frequently disproportionate to the objective that it seeks to

obtain and I think it is recognized now by almost everyone as an area that is in

need of urgent reform. Of course it goes without saying that any applicant seeking

discovery must establish that the discovery is necessary for the Pharaoh disposal of

the case or, indeed, for saving costs and I think that requirement in the rules has

led to much recent emphasis in the jurisprudence on the principle of proportionality

and that is particularly evident from a recent judgment of the Court of Appeal

delivered by Mr. Justice Hogan on 9 July 2018 in Tobin v. The Minister for Defence,

a case coincidentally not entirely dissimilar to the present in its facts, to the extent

that the plaintiff had been exposed to toxic chemical fumes as a result of which he

suffered injury and in the course of his judgment in that case, Mr. Justice Hogan

approved the observations by Mr. Justice Kelly, as he then was, in the AstraZeneca

case where he stated that the principle of proportionality governing discovery

requests required an assessment of “the extent or volume of the documents to be

discovered and the degree to which the documents are likely to advance the case of

the applicant or damage that of his opponent.” And Mr. Justice Hogan noted that

Mr. Justice Barniville in another recent case called Dunnes Stores v. McCann, which

is reported in 2018 IEHC at page 123, and referring to the case at paragraph 18 of

his judgment, Mr. Justice Hogan noted that Mr. Justice Barniville had said that the

court should be scrupulous to ensure that discovery is really needed and to refuse

such discovery where interrogatories would be more appropriate or where an

alternative means of proof is available to the applicant for discovery.”

19. After quoting some further passages from the judgment of Hogan J. in the Court of

Appeal in Tobin v The Minister for Defence, in which Hogan J. had suggested that

recourse to interrogatories would perhaps have been appropriate, and further indicated

that he would postpone making an order for discovery until that option had been

“So, applying those principles to the facts of this case, it does seem to me that the

discovery sought by the plaintiff, given its antiquity, potential breath in terms of

time periods involved and the potential oppression I think that would inevitably be

involved means that the plaintiff has not satisfied me that the discovery is

necessary for the fair disposal of the case in the absence of the plaintiff not having

employed the alternative procedures which are of course available, that’s to say by

way of seeking interrogatories or possibly a notice to admit facts or other notices

seeking admissions and I’m not therefore satisfied that the making of such an order

for discovery would, certainly at this time, be proportionate. So for those reasons,

therefore, I propose to refuse the particular category that is now in issue before the

20. The Notice of Appeal complains that the High Court judge erred:

i. in holding that it was necessary to seek the information instead by way of a Notice

to Admit Facts or by way of seeking leave to serve a Notice of Interrogatories, prior

ii. in holding that the plaintiff’s letter dated 8 May 2017 (paragraph N) as extended by

letter dated 7 May, 2019 requesting discovery of “any documentation in the

Defendants’ possession or within the Defendants’ procurement relating to all claims

of the occurrence of any neurodegenerative disorder or injuries from the use of

Tricholoroethylene, Gizer or Gun Kat at any of the Defendant’s production or

workplace facilities worldwide” was not an appropriate or adequate request for the

iii. in holding that discovery particular sought (sic) was excessively onerous on the

iv. [in failing to hold] that in accordance with Order 31 of the Rules of the Superior

Court, the discovery sought is necessary for disposing fairly of the cause or matter

v. [in failing to hold] that the documentation sought is necessary to assist the plaintiff

to prove negligence of the defendants and without which the plaintiff’s case is

vi. [in failing to hold] that the said documentation is solely within the possession and

or procurement of the defendants and that interrogatories are not an appropriate

pre-condition to seeking this discovery in the circumstances of the case.

vii. in not distinguishing Toibin v Minister for Defence [2018] IECA 230 from the facts

21. The defendants have put forward the following grounds of opposition:

i. The High Court judge was correct in fact and/or in law in holding that it was

necessary to seek information by way of Notice to Admit Facts or by way of seeking

leave to serve a Notice of Interrogatories prior to seeking discovery;

ii. The High Court judge was correct in fact and/or in law in holding that the discovery

requested by the appellant was not an appropriate or adequate request for the

iii. The High Court judge was correct to hold that the discovery sought was excessively

iv. The discovery sought is not necessary for disposing fairly of the case, or for saving

costs, whether pursuant to Order 31 of the Rules of the Superior Courts 1986 as

v. The documentation sought is not necessary to assist the plaintiff in proving

negligence on the part of the defendants, nor is the plaintiff prejudiced without it;

vi. Interrogatories are an appropriate pre-condition to seeking discovery of the

vii. The High Court judge was correct in law in his application of Tobin v Minister for

i. The discovery sought is disproportionate and is unlikely to advance the case of the

ii. The discovery sought is not necessary for the proper administration of justice;

iii. To require the respondents to make the discovery sought would be oppressive;

iv. Granting the discovery sought would impose an unreasonable burden on the

v. To grant the discovery sought would unjustifiably increase legal costs and lead to

vi. Discovery ought to be refused where alternative, less expensive and less time-

vii. Granting discovery of the category sought would be premature.

22. Before turning to a consideration of the parties’ respective submissions it is important to

record that since the judgment in the High Court was delivered the Supreme Court has

given judgment in a further appeal from the decision of the Court of Appeal in Tobin v.

Minister for Justice [2018] IECA 230 (“Tobin”). In the Supreme Court, the court’s

judgment, which bears the neutral citation [2019] IESC 57, was delivered on the 15th of

July, 2019 by Clarke C.J., with whom the other members of the court agreed. It allowed

almost the entirety of the appeal and in consequence overturned the decision of the Court

of Appeal on which the High Court judge in the present case had placed much reliance.

23. Clarke J. reviewed the case-law in segment 6 of his judgment, noting that a court hearing

an application for discovery will only order a party to make discovery if it is satisfied that

the documents sought are both relevant and necessary for the fair disposal of the case or

to save costs. The test as to relevance is that set down in the judgment of Brett J. in

Compagnie Financiere et Commerciale du Pacifique v. Peruvian Guano (1882) 11 Q.B.D.

55 (“Peruvian Guano”); whereas that as to necessity is to be found in the judgment of

Fennelly J. in Ryanair plc. v. Aer Rianta c.p.t. [2003] 4 IR 264 (“Ryanair”).

24. In addition, in an effort to limit the burdens, costs and delays incurred by orders for

discovery in modern practice, two further considerations have sometimes been proposed;

one being that of proportionality and the other being the suggestion that alternative,

25. In regard to the requirement of proportionality, the Chief Justice in Tobin locates its

genesis in remarks of his predecessor, Murray C.J., in Framus Ltd. v. CRH plc [2004] 2

I.R. 20, and points to its application by Fennelly J. in the Supreme Court in Dome

Telecom Ltd. v. Eircom Ltd [2008] 2 IR 726 and by Kelly J. in the High Court in

Astrazeneca AB and Ors. v. Pinewood Laboratories Ltd. & Ors. [2011] IEHC 159.

26. In regard to “alternative means of proof”, the Chief Justice in Tobin recalled Fennelly J.’s

statement in Ryanair that the courts may, in their analysis of the necessity of an order for

discovery, have regard to “alternative means of proof” available to the plaintiff. The Chief

Justice suggested that this has led to the courts seeking to curtail the breadth of

discovery orders by sometimes introducing a requirement that alternative methods of

ascertaining the information required – such as by means of the delivery of

interrogatories – are pursued prior to the making of an order for discovery. By way of

example he pointed to the decision of Kelly J. in the Commercial Court in Anglo Irish Bank

Corporation Ltd. v. Browne [2011] IEHC 140; as well as to that of this court in McCabe v.

Irish Life Assurance Plc [2015] 1 IR 346 and that of Barniville J. in the High Court in

27. Drawing on this jurisprudence, the Chief Justice distilled certain general principles which

28. As a starting point the importance of discovery in our legal system is recognised, and it is

noted that sometimes a party to litigation may not be able to gain access to all material

evidence without recourse to the various procedural measures which the Rules of Court

permit, of which discovery is one. The point is made that discovery can play an important

role in ensuring that the case presented by an opponent is not inconsistent with the

documentation which that opponent possesses but which is withheld from the court. The

Chief Justice further noted that discovery can also play a role in keeping parties honest,

for it cannot be ruled out that some parties might succumb to the temptation to present a

less than full picture of events to the court, were it not for the fact that they know that

any attempt to do so may be significantly impaired if there is a documentary record which

shows their account either to be inaccurate or materially incomplete. The fact that much

discovered documentation does not find its way into evidence does not mean that it was

not of importance or potential importance. He points out that discovery can influence the

evidence presented in other ways, such as by ensuring that it may be unnecessary to go

into much documentary material, precisely because the party which has discovered the

documents in question will almost inevitably have to present a case in oral evidence which

is consistent with the documentary record. Accordingly, discovery when used

appropriately, improves the chances of the court being able to get at the truth in cases

where facts are contested. In that way, he contends, it makes a significant contribution to

29. However, as the Chief Justice goes on to point out in Tobin, discovery can also hinder

access to justice if it becomes disproportionately burdensome for the party from whom

discovery is sought, particularly in terms of cost. It might lead to parties feeling forced to

settle proceedings on terms which do not reflect the strength and weakness of their

respective cases, but which are heavily, and inappropriately, influenced by the fact that

going through a discovery process will place a very significant financial burden on the

party concerned. Moreover, where the financial resources available to the parties may

differ significantly, the existence of overbroad discovery can operate to the advantage of

the well-resourced and to the inappropriate disadvantage of the small man or the small or

30. Where the price which has to be paid in seeking “perfect justice” is that the costs of

litigation generally soar to the extent that they impose a materially increased barrier to

access to justice, then the overall interests of justice are not served. Procedures like

discovery can sometimes be used tactically by one or other party (or, indeed, both) to

gain a litigious advantage rather than to achieve the specific end to which the procedure

31. In para 7.13 of his judgment in Tobin, the Chief Justice reiterates that the key criteria

“However, it also seems clear that there has been much greater scrutiny of the

issue of “necessity” in more recent times. The traditional position very much

accepted that if documents were relevant, their discovery would almost inevitably

be necessary. However, much of the recent case law has indicated a need to move

away from that position. Where there are other equally effectual means of

establishing the truth and thus providing for a fair trial then discovery may not be

“necessary”. This will certainly be so where it can be shown that the cost of making

discovery would be significant and would greatly outweigh the costs of pursuing

some alternative procedural mechanism to establish the same facts. Similar

considerations apply when the likely true relevance of documentation may not

become clear until the trial but where the immediate disclosure of the

documentation concerned would necessarily involve disclosing highly confidential

information. Furthermore, the development of a proportionality test can itself be

32. “Necessity”, per the jurisprudence, means that the disclosure of the documents concerned

may be necessary for the fair and just resolution of the proceedings and potentially for

saving costs. However, the starting point, in Clarke C.J.’s belief, has to remain a

consideration of what is “relevant”. In his view, it should remain the case that the default

position should be that a document whose relevance has been established should be

considered to be one whose production is necessary; a position capable, however, of

being displaced for a range of other reasons. The Chief Justice then went on to say:

“If it can be demonstrated that compliance with the obligation to make the

discovery sought would be particularly burdensome, then a court will have to weigh

in the balance, in deciding whether discovery is truly “necessary”, a range of

factors, including the extent of the burden which compliance will be likely to place

on the party concerned, the extent to which it might reasonably be expected that

any of the contested documentation whose discovery is sought will play a

reasonably important role in the proper resolution of the proceedings and,

importantly, the extent to which there may be other means of achieving the same

end as that which is sought to be achieved by discovery but at a much reduced

“[I]t is really the question of the proportionality of the order sought and the

possibility that the same ends could be achieved by significantly cheaper means

34. The Chief Justice was at pains to emphasise (at para 7.18) that that it can properly be

said that access to justice has been impaired even where it cannot be demonstrated that

a relevant party could not afford the burden of making full discovery. A party which will

be required to expend a great deal of money on making full discovery may be inhibited in

its ability to properly conduct litigation even if could not be heard to say that it did not

have the money to do so. Likewise, he felt it was important to emphasise that access to

justice does not only apply to plaintiffs who might be inhibited in their ability to bring

cases but applies equally to defendants who may be inhibited in their ability to properly

defend proceedings because of what might be seen to be the excessive burden of the

“The first question that needs to be asked is as to whether a party which has been

requested to make discovery has established that there would be a real problem in

being required to make discovery in what might loosely termed “ordinary” or “full”

terms, that being the disclosure of all documents which meet the test of relevance.

It seems to me to equally follow that, when requested to make voluntary discovery,

it is incumbent on a party who may wish to argue that the discovery sought is

excessively burdensome, to set forward in its response, and in some reasonable

“Where it is sought to suggest that the discovery of documents whose relevance

has been established is not necessary, the burden will lie on the requested party to

put forward reasons as to why the test of necessity has not been met. Those

reasons should initially be addressed in the response of the requested party to the

letter seeking discovery. In the event of a court being required to adjudicate on

such matters, then, to the extent that the reasons for suggesting that discovery of

any particular category of document is not “necessary” is dependent on facts, it is

for the requested party to place evidence before the courts to establish the relevant

facts. To the extent that the opposition to discovery may be based on legal

argument, then it is for the requested party to put forward its reasons as to why

37. Accordingly, while it is for the requesting party to establish relevance (which in most

cases will prima facie also establish necessity), if it is sought to contest necessity then it

is for the requested party to establish, whether by facts or argument, that discovery is

not necessary even though the documents sought have been shown to be relevant. It is

also for that party, at least initially, to suggest any alternative means of obtaining the

relevant information which are said to be less burdensome but potentially equally

effective. The time at which a requesting party needs to deal with those issues of

necessity is after a case has been made to the effect that it is not necessary that all

38. Further, it will be appropriate for a court to take into account the manner in which the

case is pleaded, not only for the purposes of determining relevance, but also to assess the

extent to which a party who objects to making discovery, on the grounds that it is

excessively burdensome, has contributed to that situation by the manner in which they

39. It bears commenting upon that the facts at issue in Tobin bore a superficial similarity to

those in the present case in as much as it was also a personal injuries action in which the

plaintiff claimed to have suffered injuries due to exposure to dangerous chemicals and

solvents at work. The plaintiff in that case was an apprentice aircraft mechanic in the Aer

Corp based at Casement Aerodrome. The State requested particulars of the plaintiff’s

claim, replies to which were furnished in March 2014. In those replies, Mr. Tobin specified

that his first exposure to solvents and dangerous chemicals was in the Engine Repair

Flight workshop (“the ERF”) in July 1991 and stated that his last exposure to chemicals

“as part of his day to day employment” was in February 1994, when he was transferred to

Air Support Company Signals to work in IT. A list of those chemicals to which he was

allegedly exposed, being those of which Mr. Tobin stated that he was aware, was also

40. In the defence delivered by the State in June, 2015, every allegation or assertion made

by Mr. Tobin in his personal injury summons was denied, save for the fact that it was

accepted that he had been employed as an aircraft mechanic at Casement Aerodrome. In

effect, Mr. Tobin was put on full proof of every aspect of his claim. In addition,

41. In August, 2015, Mr. Tobin sought voluntary discovery from the State by letter, setting

out fifteen categories of documents requested, to which the State did not respond thereby

precipitation the issuance in October, 2015 of a motion seeking an Order for Discovery,

which motion was for the most part contested. In an affidavit sworn on behalf of the State

by Captain Nic Caba, the logistical and financial burden which an order for full discovery

would impose on the State was set out. It was estimated that it would take ten members

of staff and approximately two hundred and twenty man-hours to locate, review and

categorise the documents sought. This estimation was contested by Mr. Tobin in his

42. Further, it was deposed that discovery in respect of certain categories of documentation

should be limited to the records of the ERF, rather than those of the entirety of Casement

Aerodrome. This was based on the contention that Mr. Tobin’s claim was limited to an

allegation that he was exposed to dangerous chemicals during the course of his work at

the ERF. In an affidavit sworn by Mr. Tobin in reply, it was deposed that there were 12

separate locations within the Casement Aerodrome where he and his fellow Air Corps

43. In addition, in respect of category 2, which sought discovery of all documentation, notes,

records, reports, etc., listing or identifying any chemicals utilised by Mr. Tobin in the

course of his duties, their quantities and the dates of their purchase, the State proposed

that Mr. Tobin issue a set of interrogatories requesting that the State identify whether the

chemicals listed in the replies to particulars were, in fact, in use in the ERF during the

specified time period. In response, Mr. Tobin deposed that the list referred to was

incomplete and that he did not and could not be expected to know all of the chemicals

which were in use within the workplace. On that basis, it was said that the use of

interrogatories would not allow for an appropriate or fair disposition of the case.

44. Applying the principles he had earlier identified to each of the categories of discovery

sought by Mr Tobin, Clarke C.J. concluded that they were relevant and necessary in the

context of the claim being made. Moreover, the respondents to the motion (i.e., the

State) had not demonstrated that, in all the circumstances of this case, ordering them to

make discovery of the disputed categories would be disproportionate having regard to the

burden which that would place on the State and also having regard to the availability of

interrogatories which, it was contended, would adequately meet any reasonable needs of

“In my view, it is possible to say that making full discovery in this case would place

a material burden on the State, but it should equally be emphasised that the

burden in question is far from the upper end of the scale and is well removed from

the type of case which has led to many judicial pronouncements about the very real

problems which discovery can create for access to justice. It would, in my

judgment, be appropriate to characterise the burden in this case as being moderate

rather than severe or extreme. That does not mean that it should be ignored but at

the same time it would not be appropriate to place the same weight on the burden

which making full discovery in these proceedings would place on the State, as

might be the case where full discovery would lead to the very severe burdens which

“Ultimately, the issues to which these disputed categories of discovery relate will

have to be resolved on evidence at trial. There will have to be some evidence as to

the chemicals to which Mr. Tobin was exposed and there will have to be some

evidence as to the existence or otherwise of any incidents involving such chemicals

and the training which Mr. Tobin was likely to have received. It seems to me that if

those questions were to be raised in any meaningful way by means of

interrogatories it would be necessary for the State to engage in significant research

through its own documentation so as to enable it to answer the questions raised

46. In reaching this conclusion, importance was attached (at para 9.4) to the fact that the

“…if the State is to give meaningful information by means of interrogatories then it

will have to know the answers. If it already has the information which would allow it

to give answers, then it is hard to see why appropriate admissions could not have

been made already. But if the State does not have the answers at this stage, then

it seems almost inevitable that a significant amount of research will have to be

carried out to enable proper answers to be given. Against that background, I am

not convinced that the State has established that there will be a very great saving

achieved in the circumstances of this case by using the procedural device of

interrogatories as opposed to discovery. That is not to say that there might not be

other cases where the use of interrogatories or other procedural measures might

not be likely to achieve much the same ends at much less cost.”

47. In the circumstances, Mr. Tobin was found to be entitled to use procedural measures to

ascertain the full range of chemicals to which he might have been exposed and, insofar as

it was possible, the circumstances in which that exposure took place, together with

information concerning the training which he received. It had not been demonstrated that

such information could be given in an authoritative way without carrying out at least a

significant amount of the research which would be needed to make discovery.

Furthermore, those issues are central to Mr. Tobin’s case and the discovery sought

related, therefore, to questions which were far from tangential or of only minor

consequence. In all those circumstances, the State was found not to have discharged the

onus which rests on it to demonstrate that alternative procedural measures could give all

or most of the information to which Mr. Tobin was reasonably entitled but at the

48. In my estimation it is clearly demonstrated from the pleadings and the affidavit sworn in

support of the motion by the plaintiff’s solicitor that the material in controversy and in

respect of which discovery is sought is relevant in the context of the personal injuries

claim being pursued by the plaintiff. He is put on proof of almost every aspect of his claim

including causation. The availability of evidence tending to show knowledge of the danger,

and foreseeability of the risk of injury, will be important to him in seeking to sustain his

49. Moreover, the fact that the material is relevant suggests prima facie that its discovery of

it is necessary. However, the defendants seek to dispute this, contending that a discovery

order would be unduly burdensome on them and, moreover, that it would be

disproportionate to order discovery having regard to that burden in circumstances where

the plaintiff could obtain the information which he in fact requires through alternative

means, either through a carefully crafted Notice for Particulars, through a Notice to Admit

50. Although the defendants seek to make the case that discovery would be unduly

burdensome, and disproportionate, it is a matter of significance that the defendants have

not filed any affidavit in response to the motion. Although they seek to make the case

that the nature and extent of the discovery requested would be unduly burdensome they

have placed not a scintilla of evidence before the court as to why in fact that would be so.

Counsel for the defendants points simply to the second sentence of the trial judge’s ruling

as recorded in the transcript, where he stated “It is clear from the evidence and from the

pleadings that the defendants are part of a large United States multinational corporation”,

as though it were enough. In my view it is not enough, and not so by a significant

margin. In that regard we have not been told the number of production or workplace

facilities involved; the geographical spread involved (bearing in mind the plaintiff’s offer

to limit his claim for discovery to the defendants’ production or workplace facilities in

Ireland and North America); the numbers of personnel who might potentially be involved;

the potential number of records involved and where and how they might be stored; the

precise anticipated difficulty in identifying and collating the documents in respect of which

discovery is sought; the projected numbers of personnel who would be required to be

deployed to perform that exercise; the projected number of man hours involved; the

projected cost thereof and perhaps also, if relevant, any limitation of resources available

to the defendants that they would wish to rely upon. It is not for the courts to speculate

on such matters simply on the basis that the defendants are part of a large United States

multinational corporation. If a case of undue burden is being advanced, then the nature

and extent of the burden needs to be spelt out and established in evidence. The

defendants have failed to do so. In so far as the High Court judge was disposed to forgive

this default on the basis that the request for the additional material now sought to be

discovered was made late in the day, he was in error in my view. The appropriate way to

have dealt with that would have been to grant the defendants an adjournment (with

possible costs implications for the plaintiff) so that they could prepare the necessary

affidavit evidence, had such an adjournment been sought. He could even have offered it

of his own motion. However, no such adjournment was sought, nor was it offered, and

the trial judge was not entitled to infer an undue or substantial burden in the absence of

51. However, if for argument’s sake we were to approach the matter on the basis that the

court could accept, as matter of likelihood, and notwithstanding the paucity of evidence

as to detail, that it would be burdensome, whatever about unduly so, for the defendants

to have to make the discovery sought in this case, it still begs the question as to whether

the defendants have discharged the onus upon them of showing that alternative means of

obtaining the relevant information exist which would be less burdensome but potentially

equally effective. Once again, there is no evidence in that regard, although paragraph

7.21 of the judgment of Clarke C.J., where he remarks: “[t]o the extent that the

opposition to discovery may be based on legal argument, then it is for the requested

party to put forward its reasons as to why production is not necessary”, appears to leave

open the possibility that legal argument alone might in some cases suffice.

52. Counsel for the defendants has pointed to the Rules of the Superior Courts as providing

for each of the three suggested alternative means by which the information which the

plaintiff hopes to obtain on discovery could more readily, and more economically, be

obtained. It seems to me, however, that similar issues arise in this case to those with

which the Supreme Court had to grapple in the Tobin case. Legal submissions only take

the defendants so far. Yes, they have demonstrated that alternative means of obtaining

the information do exist, but they have not demonstrated that they would be substantially

less onerous to comply with than making the discovery sought in the circumstances of

this case. To do so would require evidence, and once again the defendants have put

forward no evidence. As was the case in Tobin, it is reasonable to apprehend that unless

the defendants have the actual information readily to hand (and they have not stated that

they do), answering relevant queries whether they are put by way of Notice for

Particulars, Notice to Admit Facts, or by way of Interrogatories, will almost certainly

involve them engaging in significant research through their own documentation so as to

53. In all the circumstances of the case I am satisfied that the defendants have not

discharged their onus of showing that the discovery sought is unnecessary on account

that it would be unduly burdensome and/or disproportionate having regard to the

existence of alternative means of obtaining the information sought. In so far as the High

Court judge found otherwise he was in error, although in fairness to him his decision was

rendered, as has been pointed out, before the Supreme Court delivered its judgment and

ruling in the Tobin case. I would therefore allow the appeal and grant an order for

“Any documentation in the defendants’ possession or within the defendants’

procurement relating to all claims of the occurrence of any neurodegenerative

disorders or injuries from the use of Trichloroethylene, Gizer or Gun Kat at any of

the defendants’ production or workplace facilities in Ireland and North America.”

Result: Appeal allowed

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	High Court of Ireland Decisions
You are here: BAILII >> Databases >> High Court of Ireland Decisions >> McNally v Molex Ireland Ltd. & anor [2019] IECA 284 (13 November 2019) URL: http://www.bailii.org/ie/cases/IEHC/2019/2019_IECA_284.html Cite as: [2019] IECA 284

High Court of Ireland Decisions