Refers to a 24 hour work period.

one set of men or boys, or the usual number of consecutive hours for which one set work; e.g.~day shift, night shift, single, double, treble shift; an 8.hour or a 12-hour shift.

a unit of time equal to the scheduled period of work at a factory or other place of business. Businesses operating on a 24-hour basis typically organize the day into three daily shifts of 8 hours each. This usage is consistent with the old English meaning of "shift" as an arrangement or division.

the time period during which you are at work

a group of workers who work for a specific period of time

a requirement to have work done by one or more -- employees for range of time over one or more weekdays

The amount of hours spent at one's job, measured from moment you walk into the door, till the time you walk into your house. (Has no relation to what the time clock might actually tabulate.)

Part of the work-program of a stevedoring company (a working day can have up to 3 shifts (24 hours)).

The employee's regular work period, with the early morning shift hereinafter referred to as the first shift, the late afternoon shift hereinafter referred to as the second shift, and the late evening shift hereinafter referred to as the third shift.

The number of hours or the part of any day worked.

Term applied to the daily work schedule of a plant or its employees.