What is Shift work?

Shift work is work performed outside standard business hours — evenings, nights, early starts, weekends — normally organised on a roster so that the operating day is longer than any one shift. Around one in five Australian workers regularly works non-standard hours. The reason it matters commercially is that the hours usually attract shift loadings or penalty rates, and the reason it matters operationally is fatigue.

A shift is a single continuous block of working time with a defined start and finish — a morning shift of 6am–2pm, for example. A roster is the pattern of shifts across a period, and shift work is the arrangement of working those shifts rather than fixed office hours. A shift with an unpaid gap in the middle is a broken or split shift.

There is no single answer, and this is the point employers most often get wrong. Each modern award defines shift work for its own purposes — usually by reference to when the shift starts or finishes — and that definition drives the shift loadings. Separately, the National Employment Standards use a narrower definition to decide who gets the extra week of annual leave (broadly, a shift worker on a continuous, 7-day roster who is regularly rostered on Sundays and public holidays). Someone can be a shift worker for penalties but not for the extra leave. Check the award — start from the award rate guides.

Some do. The NES provides five weeks of annual leave instead of four for an employee who qualifies as a shift worker under that definition — broadly, someone on a continuous shift roster who is regularly rostered to work Sundays and public holidays. The award or agreement may define the qualifying category, so check it rather than assuming any shift worker qualifies.

It depends entirely on the award. Some pay a percentage loading for afternoon and night shifts; some pay a flat dollar amount per hour; some pay a higher rate for permanent night work. The loading is usually defined by when the shift finishes, not when it starts, which catches people out. Use the penalty rate guide and the calculator on the relevant award guide.

Shift work — particularly night work and rapidly rotating patterns — disrupts sleep and is associated with fatigue-related risk. Under work health and safety law employers must eliminate or minimise risks so far as is reasonably practicable, and roster design is one of the levers that duty applies to. Rotating forward, keeping night blocks short and protecting genuine recovery time are the standard controls — see how to create a rotating roster.