The MEP industry is notorious for free overtime for salary workers. Here at Interface, there is an occasion of overtime that I will do, but nobody forces you to work overtime if you don't want to. I have averaged 40-45 hours a week, and if you work under 40 hours a week you will lose some of your PTO in response.
I also feel the high paced work environment is easy to cloud over your regular life, which worries me. I hear ALOT of the seniors and higher level positions work 50+hours a week. They claim they do it because they love their job though.