There were J-Drama actually, ハケンの品格 ("The Pride of the Temp") about the contractor who is so brilliant that she gives conditions to the staffing company.

> The conditions are that her contract term is for 3 months only, working time is from 9am to 6pm on weekdays only and no extra work or work expected on holidays.

http://asianwiki.com/The_Pride_of_the_Temp