work-hour

or work·hour, working hour

[wurk-ouuh r, -ou-er]

noun

any of the hours of a day during which work is done, as in an office, usually between 9 a.m. and 5 p.m.

Origin of work-hour

First recorded in 1840–50
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019