15.—(1) Any period of time for doing any act required or permitted to be done under any of the rules in Schedules 1, 2, 3, 4 and 5, or under any decision, order or judgment of a tribunal or a chairman, shall be calculated in accordance with paragraphs (2) to (6).
(2) Where any act must or may be done within a certain number of days of or from an event, the date of that event shall not be included in the calculation. For example, a respondent is sent a copy of a claim on 1st October. He must present a response to the Employment Tribunal Office within 28 days of the date on which he was sent the copy. The last day for presentation of the response is 29th October.
(3) Where any act must or may be done not less than a certain number of days before or after an event, the date of that event shall not be included in the calculation. For example, if a party wishes to submit representations in writing for consideration by a tribunal at a hearing, he must submit them not less than 7 days before the hearing. If the hearing is fixed for 8th October, the representations must be submitted no later than 1st October.
(4) Where the tribunal or a chairman gives any decision, order or judgment which imposes a time limit for doing any act, the last date for compliance shall, wherever practicable, be expressed as a calendar date.
(5) In rule 14(4) of Schedule 1 the requirement to send the notice of hearing to the parties not less than 14 days before the date fixed for the hearing shall not be construed as a requirement for service of the notice to have been effected not less than 14 days before the hearing date, but as a requirement for the notice to have been placed in the post not less than 14 days before that date. For example, a hearing is fixed for 15th October. The last day on which the notice may be placed in the post is 1st October.
(6) Where any act must or may have been done within a certain number of days of a document being sent to a person by the Secretary, the date when the document was sent shall, unless the contrary is proved, be regarded as the date on the letter from the Secretary which accompanied the document. For example, a respondent must present his response to a claim to the Employment Tribunal Office within 28 days on the date of which he was sent a copy of the claim. If the letter from the Secretary sending him a copy of the claim is dated 1st October, the last day for presentation of the response is 29th October.