Contains history, case studies, and discussion of the use and benefits of flex-time employment, a pattern of working hours in which individual employees begin and end their work day at times of their choice, within certain limits, as long as they work a prescribed number of hours. The paper addresses the following topics: (1) What is flex-time, (2) variations on the flex-time theme, (3) where flex-time began--and why, (4) flex-time system spreads, (5) flex-time crosses the ocean, (6) capsule comments from flex-time users, (7) flex-time and overtime, (8) flex-time and exempt status employees, (9) flex-time and individual efficiency, (10) flexibility of flexible work schedules, (11) variety of flex-time at Control Data Corporation, (12) flex-time problems--that needn't be, (13) benefits of flex-time for employees, (14) benefits for management, (15) flex-time and the energy crisis, (16) disadvantages of flex-time for employees, (17) disadvantages for management, (18) flex-time and you, (19) case histories of flex-time at Samsonite Corporation and Scott Paper Company, and (20) prognosis for flex-time. (WL)