It largely depends on the company that you work for and what you’re doing.
Frequently, salaried workers need to put in extra hours without extra pay. This can be demotivating and stressful. However, it’s sometimes non-negotiable.
That said, the smart thing to do is keep track of all the extra hours that you put in and use that to your advantage when asking for a raise or promotion. If you document your work, the company is more likely to give you a bump in pay or more responsibility.