Ronen Simcha, in his 1981 book Flexible Working Hours: An Innovation in Quality of Work Life, defines flex time, flextime or flexible working hours as a type of arrangement that allows employees to vary their work schedules, within certain ranges and dimensions, according to their differing needs.
Flextime allows a departure from the rigid work schedule marked by fixed daily hours and timings. It allows employees various options such as starting work early and ending early, starting late and ending late, taking extended breaks during the day by making up for the lost hours at other times, working extra hours on one day to make up for shortened hours on another day, and the like.
Flextime has become a popular trend, with data compiled by the U.S. Department of Labor's Bureau of Labor Statistics in May 2001 indicating that 28.8 percent of the nation's 99.6 million full-time wage and salary workers resorting to some form of flextime arrangement, and one-third of them being part of a formal company arrangement.
The question that must be answered, however, is "Does a flex time policy result in fewer employee absences?"