Exempt Persons At Work
1. Any member of the Singapore Police Force (including the Special Constabulary), Singapore Prisons Service, Internal Security Department, Central Narcotics Bureau, Singapore Armed Forces, Singapore Civil Defence Force and the Immigration & Checkpoints Authority while on duty.
2. A crew member at work on board any ship, aircraft or any other international mode of transport which does not pose a risk to the safety and health of any person other than the crew member himself or any other crew member on board the ship, aircraft or other international mode of transport.