(1) Notwithstanding any other provision of this or any other enactment, but subject to subsection (2), an adjudication officer or the Court shall not investigate a trade dispute to which a worker who has ceased to be employed by reason of his or her retirement is a party unless -

(a) the dispute was referred to the Commission for conciliation within a period of 6 months from the date on which the worker’s employment ceased, or the date on which the event to which the dispute relates occurred, whichever is the earlier, or

(b) the dispute was referred to an adjudication officer or, as the case may be, the Court within the period referred to in paragraph (a).

(2) Notwithstanding subsection (1), an adjudication officer or, as the case may be, the Court may extend the period referred to in that subsection by a further period not exceeding 6 months where the adjudication officer or the Court is satisfied that the failure to refer the dispute within the period referred to in subsection (1) was due to reasonable cause.