1) a payment in addition to what is usual, necessary or expected, e.g. and extra payment to workers (bonus)

2) a difference (expressed in a percentage) between things e.g. wages or skilled and unskilled workers in the same industry (differential)

3) the scientific study of the relationship between workers and their environment (ergonomics)

4) a woman in authority over other workers (forewoman)

5) to prevent workers from entering a factory etc, e.g. during an argument between management or owners and the workers (lock out)

6) a worker or group of workers at the gates of a factory etc during a strike, to try to persuade others not to go to work (picket)

7) a structure put up for workers round a building which is being built or prepared; a platform on which criminals are executed (scaffold)

8) a change of place, direction or character; a change of one thing for another; a mechanism for changing gears in a vehicle; a group of workers that starts work as another group finishes; period for which such a group works (shift)

9) a group of professional workers in a business, school etc; a group of officers in the army; a set of five parallel lines on which notes are written (staff)

10) not having enough workers to do the work (undermanned)