Never work for free. I have seen so many post stating I worked so many ivertime hours for free, I gave so much of myself to said company. Remember, you are a number, HR isn't your friend. Always get paid. Never ever do anything free.
I learned the hardway once, I worked my way up to management. One of my employees was in an accident he did not cause. Corp wanted him fired. I fought for him. He was fired and I was let go for “bucking” the system.
So much of my time, was given. The department numbers were horrible, with the team that was built, we got those numbers down to un heard of numbers, I was just a number.
Never ever work for free.