An employment tribunal shall not consider a complaint under section 168, 168A, 168B, 169 or 170 unless it is presented to the tribunal—
within three months of the date when the failure occurred, or
where the tribunal is satisfied that it was not reasonably practicable for the complaint to be presented within that period, within such further period as the tribunal considers reasonable.
Section 292A (extension of time limits to facilitate conciliation before institution of proceedings) applies for the purposes of subsection (1)(a).