I know employees not in managerial roles that do pretty much that too. Salaries also depend on the size of the company, I know some that make less than I do in an entry level job in my department.

"C-suites" (didn't use traditional titles as it wasn't a private business) at my previous job were obligated to work nights, weekends, interact with clients directly (including helping when facing difficult ones) and so on... Not all c-suites jobs are the same and not all of them are easy either...