As a salaried employee, you are consided an "exempt" employee. Short of an HR policy that indicates that you will be compensated for anything over 40hrs (state of Texas gives comptime over 40hrs to exempt employees) they are within labor guidelines to work you you the extra hours as long as lunch and required breaks are given. HR works for the company, they are not necessarily your friend, so be careful to who and how you complain! Learn your HR manual and your rights, don't take anyone's word for what the policy is, see it for yourself and know it by heart. Having the policy on your phone for quick reference is a good practice and if you are a veteran, someone with special needs, or disabled, know your company's policy on resonable accommodation,and what benefits they have for you!