Two possible meanings.
- Alternating Blocks of shifts. No rotation within a block of shifts. For example, with a continuous shift system generating 24hrs cover seven days with 12hr shifts, a repeating pattern based on four Day shifts followed by a block of four rest days and then four Night shifts.
- Across blocks of shifts. A pattern of working time in which two, or frequently more, successive blocks of shifts of the same type are rostered. For example, in continuous systems where three (8hr) shifts a day are worked, and shifts are worked in blocks of six, four blocks of Morning shifts are followed by four blocks of Afternoon shifts and then four blocks of Night shifts.