A person who works at night, esp. one who works a night shift.

A man who works during the day or on a day shift. Cf. nightman, n. 2. Obsolete. rare.

A man who works during the night or on a night shift. Also (slang): a nocturnal wrongdoer or criminal; a burglar.

A person who works during the day; one who works a day shift. Cf. night worker, n.

A man (esp. a shift worker) who works during the day as opposed to at night. Frequently opposed to nightman.

A person who works full-time; (sometimes more generally) a person who engages in an activity, occupies a role, etc., full-time. Cf. part-timer, n.

(a) (now chiefly South Asian) a person who works full time; cf. full-timer, n. 2; (b) a child who attends school during the whole of the school…

a person, typically a man, who works through the night, or (less commonly) stays up all night in recreational pursuits; cf. all-nighter, n. 2a.

A person who works part-time; a part-time worker, student, etc.

A full-time student, worker, etc.; = full-timer, n. Now rare.

A person who works overtime.

In the Soviet Union: an act of working voluntarily on a Saturday; a Saturday worked voluntarily. Cf. subbotnik, n.

A person who works routinely between the standard office hours of 9 a.m. and 5 p.m.