They certainly do.  Especially when they prevent a young salaried person from independently deciding to work hard for either personal edification or to gain valuable skills for the next stage of his/her career.

From the Mises Institute:

I am a young founding employee at a startup that helps other young people get started in their careers. I see every day the steps that must be taken for young people and young companies to succeed in a constantly changing economy. I experience firsthand and vicariously through the hundreds of customers and vendors Ive worked with the sacrifices these young people and young companies make in order to set themselves up for success. While I understand the intention of overtime regulation, I urge you to reconsider placing this burden on workers as it will disproportionately harm the young employees and employers alike.