The Collaborative International Dictionary of English v.0.48:
call-back \call-back\ n. 1. a return call, especially a telephone call. [WordNet 1.5] 2. the recall of an employee to work after a layoff. [WordNet 1.5]WordNet (r) 3.0 (2006):
call-back n 1: a return call 2: the recall of an employee after a layoff