If you're a consultant, and you're working for a consulting firm, it is expected that you'll work overtime. It goes with the territory. Prior to accepting employment, there is usually a clause in the hire letter that states two things that you must agree to, or don't take the job; 'at will' employment which means they can fire you, part company, terminate you, etc., for any reason or for no reason at all, and a statement that says, "You agree, if hired, that you will, at times, be required to work over forty hours per week and that your work may include working nights and weekends." Notice that it says "at times." Heck that can all the time, part of the time, sometimes, every time. Where consultants are concerned, it's loosey goosey, but it is accepted!