"Exceptionally, it is possible to give time off in lieu and indeed employers on Grade F and above will be working hours in excess of 37 a week from time to time without recompense. Cases will arise where employees are required to work excessive hours for a period of time for some exceptional reason. In such cases consideration can be given to the payment of special payment using the following criteria [criteria are then set out]."
"Staff should not be contracted to work hours of more than the standard 37 a week unless this is unavoidable for the proper performance of the job. But where such hours are to be worked the officer shall receive: either overtime payments in accordance with section 3 paragraph 12 of this Scheme; or such other payments or arrangements as may be determined locally."