How the tool works

Terms used

Long shift

10 hours or more.

Long evening shift

A long shift starting before 16:00 rostered to finish after 23:00.

Night shift

At least 3 hours of work in the period 23:00 – 06:00.


Period during which you are required to be available at home to be called into work or give advice over the telephone.

Low intensity on-call rota

Duty on a Saturday and Sunday where no more than 3 hours of work takes place on each day and no more than 3 episodes of work each day – up to 12 consecutive shifts of this type can be worked.


Any shifts/on-call periods where any work falls between 00:01 Saturday and 23:59 Sunday.