back pay
noun
pay received by an employee from an increase awarded retrospectively
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Examples from the Web for back pay
Historical Examples of back pay
The correspondence of the back-pay department is itself a burden.
I've got that thief Mulvaney's for all my back-pay, an' she'll kick my heart sick wid that blunderin' long shtock av hers.
Soldier StoriesRudyard Kipling
Nearly all the back-pay members contemplate making the round trip with us in case their constituents will allow them a holiday.
Sketches New and Old, CompleteMark Twain (Samuel Clemens)