A pattern of work in which the starting time of successive rostered shifts, or blocks of rostered shifts, changes in an anticlockwise direction. For example, with a three (8hr) shifts a day system, generating 24hrs cover for 7 days a week, and shifts worked in blocks of six;
- Within a block of shifts. Two Night shifts followed by two Afternoon shifts and then two Morning shifts.
- Across blocks of shifts. A block of six Night shifts is followed by a block of six Afternoon shifts and then six Morning shifts.