I think he meant time off (which is more realistic) Considering most people have 2 day off each week + the statutory holidays the 1/3 is actually achievable. (exemple for canada with 4 week off: 52*2=104 "week end" + 10 statutory holliday + 4 week (20 days) vacation= 134 days/365 = 37% more than 1/3)