8.  [F1Subject to [F2[F3article] 8B], an employment tribunal] shall not entertain a complaint in respect of an employer’s contract claim unless—

(a)it is presented at a time when there is before the tribunal a complaint in respect of a contract claim of a particular employee which has not been settled or withdrawn;

(b)it arises out of a contract with that employee; and

(c)it is presented—

(i)within the period of six weeks beginning with the day, or if more than one the last of the days, on which the employer (or other person who is the respondent party to the employee’s contract claim) received from the tribunal a copy of an originating application in respect of a contract claim of that employee; or

(ii)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.