The following section is hereby substituted for section 12 of the Principal Act:
(1) An employee shall not be entitled to redundancy payment by reason of having been laid off or kept on short-time unless -
(a) he has been laid off or kept on short-time for four or more consecutive weeks or, within a period of thirteen weeks, for a series of six or more weeks of which not more than three were consecutive, and
(b) after the expiry of the relevant period of lay-off or short-time mentioned in paragraph (a) and not later than four weeks after the cessation of the lay-off or short-time, he gives to his employer notice (in this Part referred to as a notice of intention to claim) in writing of his intention to claim redundancy payment in respect of lay-off or short-time.
(2) Where, after the expiry of the relevant period of lay-off or short-time mentioned in subsection (1)(a) and not later than four weeks after the cessation of the lay-off or short time, an employee to whom that subsectio
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