Can You Get Lower Pay for Doing More Work than Your Co-Workers
A restaurant worker has been working very hard, and has been promoted to shift manager, being paid $10 per hour. However, the employer has given some of the other employees raises and has hired additional workers who make almost as much, and some get paid even more than the shift manager for doing a lot less work. Is it legal for the employer to pay the shift manger less money for more work?
Re: Can You Get Lower Pay for Doing More Work than Your Co-Workers
Unless unlawful discrimination is involved (discrimination based upon race, color, religion, sex, etc.), and nothing in the question suggests that it is, then the employer is free to pay employees the lowest rate at which they are willing to work. The shift manager needs to ask for a raise, and be prepared to seek work elsewhere if the employer says 'no' or continues to offer what the shift manager sees as inadequate compensation.
(If the workers are unionized, then the union contract should define their wages, but restaurant workers are rarely unionized and the question makes clear that there is no standard pay structure.)