noun ( BrE )
1.
( NAmE work·day ) the part of a day during which you work :
I spend most of my working day sitting at a desk.
2.
(also less frequent work·day ) a day on which you usually work or on which most people usually work :
Sunday is a normal working day for me.
Thousands of working days were lost through strikes last year.
Allow two working days (= not Saturday or Sunday) for delivery.