Sounds like the 'unlimited vacation' that's getting quite popular in the Valley
Re:Japan’s 105-Hour Workweek
by jackcosgrove on Tuesday December 15, 2015 @06:02AM
(#10737084)
Unlimited vacation is an accounting trick. If a company is acquired, promised yet unclaimed vacation is a liability reducing valuation. Unlimited vacation means the company has not promised a set amount for the year and thus is not liable for it, paradoxically.
After two years, only 34 people were willing to be officially identified as people who go home early.