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Information
courtesy of Circadian Technologies, Inc.
Backward
rotation
See counterclockwise
shift rotation.
Clockwise
shift rotation
A work schedule in which shifts move forward, from days to evenings to nights. See
rotating
shifts;
compare counterclockwise
shift rotation.
Compressed
workweek
A schedule in which employees work approximately 40 hours in fewer than 5 days, often
in 10- or 12-hour shifts.
Continuous
operations
A situation requiring around-the-clock manpower.
Counterclockwise
shift rotation
A work schedule in which the shifts move backward, from nights to evenings to days.
See rotating
shifts;
compare clockwise
shift rotation.
Day
shift
A period of work in which half or more of the hours worked are between 8 a.m. and
4 p.m.
Double
shift
Two consecutive shifts worked in one 24-hour period.
Evening
shift
A period of work in which half or more of the hours worked are between 4 p.m. and
midnight.
Extended
duty hours
Long periods of work that cause a worker to get less sleep than usual or no sleep.
Fixed
shifts
A work schedule in which the hours of work remain the same from day to day. Compare
rotating
shifts,
irregular
shifts.
Flextime
A system in which starting and stopping hours of work are determined by the individual
worker, with a required number of total hours specified by the employer. Usually
there is a daily core period when all workers must be present.
Forward
rotation
See clockwise
shift rotation.
Full-time
employment
A job consisting of 35 or more hours of work per week.
Irregular
shifts
A work schedule that is variable and erratic. Compare fixed shifts, rotating shifts.
Moonlighting
Holding more than one job.
Night
shift
A period of work in which half or more of the hours worked are between midnight and
8 a.m.
Nonstandard
work schedule
See shiftwork.
Overtime
Time worked at one job in excess of 40 hours per week. Overtime may be required or
voluntary.
Rotating
shifts
Work in which the hours from day to day or week to week change regularly, for example
from a days to evenings to nights. Rotation may be rapid (e.g., 1-3 days), medium
length (e.g., 1 week), or long (e.g., 4 weeks); it may proceed forward, as noted
above, or backward (days to nights to evenings). Compare fixed shifts, irregular shifts.
Shiftwork
Any nonstandard work schedule (including evening or night shifts, rotating shifts,
split shifts, and extended duty hours) in which most of the hours worked are outside
the period between 8 a.m. and 4 p.m. See day shift, evening shift, night shift, rotating shifts, split shift, extended duty hours.
Shiftworker
A person who works a nonstandard schedule. See shiftwork.
Shortened
workweek
A schedule of full-time employment that comprises 35 or fewer hours of work per week.
May also be used to mean compressed workweek.
Copyright
2000 Circadian
Technologies, Inc.
(Cambridge, Mass.), publishers of information for night workers and managers of 24-hour
operations.
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