When I tested on Skyrim, the normal hours were 10 hours by 5 days with volunteer weekend work. Sometimes late hours if there was a build cooked late to smoke test. All optional and volunteer. Overtime and crunch-time were the only time I felt I had a solid paycheck. I hated when crunch time became taboo and stopped getting paid overtime.
PS: If ya got Skyrim QA jokes, my response is the bugs everyone found were already logged into the database and management pushed the product out early to hit a 11-11-11 release date. The build that came out in February, should've been the release.