I am an internal auditor of a $320,000,000 bank. Both the compliance auditor and I work 4 days (80%) per week. I think the internal audit function is one in which alternate schedules work. IMO, both my employer and I benefit from this arrangement. I complete substantially the same work I would if I worked 5 days. I like to think that I budget my time more efficiently. Therefore, my bank gets the job done at 80% of the cost and I get that extra day off!