13 A summons for production on the other hand, requires that the documents specified, which are within the custody and control of the person to whom the summons is directed, be produced to the Court, which then deals with issues of access and confidentiality, if they are raised. Summonses may be issued to the parties in the proceedings, or to strangers to the litigation. The documents which are summonsed must have a relationship to the proceedings, so that for example, while they may not be relevant to an issue in the proceedings, they must have some legitimate forensic purpose, such as pursuing a proper course in cross examination. It is in that sense that the purpose of the summons must be to have relevant evidence produced.
14 One of the differences between a notice of discovery and a summons, is that a summons must identify the documents to be produced with reasonable particularity. If not, the summons will be set aside. A description of a document in general terms, is not however, necessarily a proper basis for having a summons set aside, as improperly seeking discovery. The use of descriptions such as 'referring to' or 'relating to', will not necessarily be improper, unless the result of the use of such descriptions is to require the recipient of the summons to assess the relevance of the documents sought to issues which lie between the parties in the proceedings. It is that obligation, if it arises under the summons, which gives rise to impermissible discovery, by way of a summons.
15 Summonses may thus require the production of documents which 'relate to' or 'refer to' a particular fact or subject matter, if the production required is not oppressive and is reasonably necessary in the proceedings. An obligation to exercise judgment as to whether a document relates to or refers to a particular subject matter, does not give rise to a need to assess the relevance of documents to issues in the proceedings. (For a helpful discussion of this distinction see Southern Pacific Hotel at 718 to 719.)
16 It is not necessary, however, that it be intended to tender the documents produced in response to a summons as evidence in the proceedings. However, if an unduly onerous obligation is imposed upon a person to collect and produce documents which can have little or no relevance to the proceedings, it will be set aside.
17 The well known authorities in this area illustrate these points. In The Commissioner for Railways v Small 1938 38 SR 564, a summons was issued to a third party, which required the production, amongst other things, of 'all documents, papers, reports and correspondence relating directly or indirectly to this action'. Jordan CJ held that a stranger to the litigation, not being liable to give discovery, should not be required to 'search for and produce all such documents as he may have in his possession or power relating to a particular subject matter.' To require this would be to effectively require discovery.
18 As to parties to litigation, it was the view of Jordan CJ that it was not legitimate to use a subpoena duces tecum as an application for discovery. His Honour said at pp574-575:
'Discovery applications should be made at the proper time and place. It would greatly impede the trial of actions at nisi prius, and impose an intolerable burden upon the presiding judge, if he were required from time to time to suspend proceedings and wade for himself through masses of documents for the purpose of endeavouring to determine whether any of them are relevant. Especially is this so when the documents may be called for whilst the case is still at the stage when it is difficult or perhaps impossible for the Judge to know what may become relevant and what may not In the absence of special circumstances, e.g. Griebart v. Morris [1920] 1 K.B. 659, a party is not more entitled to use a subpoena duces tecum than he is a summons for interrogatories, for the purpose of "fishing," i.e., endeavouring, not to obtain evidence to support his case, but discover whether he has a case at all : Hennessy v. Wright 24 Q.B.D. 445 at 448, or to discover the nature of the other side's evidence: Griebart v. Morriss [1920] 1 K.B. 659 at 666. Even if the documents are specified, a subpoena to a party will be set aside as abusive if great numbers of documents are called for and it appears that they are to sufficiently relevant: Steele v Savory [1891] W.N. 195.'