“143. The principles and guidance set out in Abdelghafar[1995] ICR 65 concerning the EAT's approach to applications to extend the time limit for appeals have been approved by this Court on several occasions. It is perceived as being a strict, perhaps 'hard-hearted', approach. But it is not inflexible. It involves the exercise of a discretion in a way which is 'judicial', 'even-handed' and, above all, fair.” 144. We conclude that the exercise of the discretion involves recognising a material distinction. There is a legally significant difference between the case of an appellant who lodges a notice of appeal and nearly all of the documents required by rule 3(1) inside the time limit, and an appellant who lodges nothing until after the time limit has passed. The first such appellant has not fully met the requirements of rule 3(1), but has, nevertheless, substantially complied with them. How substantially depends on what document/documents is/are missing, how much of any document is missing, and how important the document is to the appeal. That appellant has also, on the face of it, complied with the time limit in rule 3(3). That difference is obviously material to the exercise of the discretion to extend time. It follows that that difference should, in principle, be reflected in the EAT's approach to the exercise of its power to extend time. We accept that the authorities about cases in which documents were missing do not refer to this distinction, and, it follows, do not consider it whether or not it is material to the exercise of the discretion. But we see nothing in the reported decisions in this Court to suggest that we are wrong to hold that the distinction we have identified is material to the exercise of the discretion. 145. The express recognition of the importance of that distinction is consistent with, and does not conflict with, the guidelines in Abdelghafar, by which we are bound. The basis of those guidelines is that the EAT takes a strict view of the importance of submitting an appeal within the time limit in rule 3(3). The three appeals with which we are concerned, however, are all cases in which an appellant has substantially complied with that rubric. Moreover, the guidelines are just that. They are not rigid rules of thumb. Rather, they are intended to guide the exercise of a very wide discretion, not to dictate the outcome of that exercise, as Mummery J made clear in Abdelghafar……” 147. Three further points follow. First, a case in which an appeal is lodged in time but a document or part of a document is missing is very likely to be a case in which the appellant has made a mistake. The mistake is the reason for invoking the discretion conferred by rule 37(1). The fact that a mistake has been made cannot, therefore, be used as a reason for barring the exercise of that discretion (and see paragraph 152.ii., below). An understandable or reasonable mistake about the documents cannot necessarily be discounted simply on the basis that, had the litigant filed the papers earlier, the mistake might have been picked up and corrected before the expiry of the time limit. That would be to exercise the discretion in a 'programmed' way. Second, before it can lawfully consider the exercise of its discretion in such cases, the EAT must clearly understand the appellant's explanation for her mistake, because, unless it does so, it cannot properly consider whether that explanation is satisfactory or not. Third, while the EAT has no duty to correct an appellant's mistakes, when the EAT in due course tells the appellant the she has made a mistake, the delay which is relevant to the exercise of the discretion to extend time is the delay between when the EAT tells the appellant of her mistake, and when she corrects it, a point recognised by Judge 1….”
“61. The structure of the amended rule 37 (5) is that the EAT has a discretion (distinct from the general discretion in rule 37 (1)) to extend time in such a case if two conditions are satisfied – first, that the error is minor; and second, that it has been rectified. 62. The first question is thus whether the error was "minor". The Judge thought that it was not, because the grounds of resistance are of their nature central to the issues in the case. I see the argument, but I agree with Elisabeth Laing LJ that that does not represent the right approach to assessing whether an error is minor for the purpose of this rule. For the reasons given by her, such an approach would undermine the evident purpose of the amendment, by greatly limiting the scope for the exercise of the discretion for which it provides. In my view the error in this case was minor because it did not involve any wholesale non-compliance with rule 3 (1) (b), even as regards the response. What the Appellant failed to serve was not the ET3 itself but only a part of it. If, as often happens, the Respondent had stated its grounds of resistance in the body of the response form itself and not in an attachment, but the Appellant had failed to copy that particular page, that would be just the kind of minor error that the amendment is directed to; and I cannot see what difference it makes that the omitted grounds were for convenience contained on a separate sheet or sheets. 63. There is no dispute that the second condition is satisfied, since the error has been rectified. It follows that the Judge was wrong not to consider the exercise of the discretion conferred by rule 37 (5). I am satisfied that if he had done so he would have been bound, in the circumstances of this case, to exercise the discretion in the Appellant's favour. This was a case of a failure to serve only part of one of the documents (then) required by the Rules. The failure was promptly remedied and gave rise to no prejudice. It is true that the only explanation offered by the Appellant was that he had not realised that the pages containing the grounds of resistance needed to be included. It is possible to see how a litigant in person might make such an error in a case where the respondent has included their grounds of resistance in a separate document. I accept that it remains careless, because if he had read the Practice Direction (as he was enjoined to do – see para. 49 above), and done so with sufficient attention, the position should have been clear to him. But it is on no view a case of deliberate or reckless disregard for the rules or of pursuit of some tactical advantage, and it seems to me that justice plainly required an extension.”