Overtime for Constables and Sergeants is potentially payable (or time off in lieu may be taken) when an officer:
Remains on duty after his/her tour of duty ends,
is recalled between two tours of duty, or
is required to begin earlier than the rostered time without due notice, and on a day s/he has already completed her/his normal daily period of duty.
Inspectors and above never receive ‘overtime’ in any circumstances.
The provisions fully explaining overtime can be found at Regulation 25 and Annex G.
DMS is set to the Police regulations and automatically selects the correct overtime rate.