Comment by saghm

Maybe the goal isn't knowing when the lie as much as being willing to tolerate the bullshit they'll want to throw your way away the job. Presumably anyone not willing to say they like overtime (or unable to determine that's what the employer wants them to say) would not be compliant to demands to actually work overtime. If you don't give the answers they expect you to know you're supposed to give, they can likely rule out you as as an employee who will keep your head down and not rock the boat.