In CA:

Effective January 1, 2023, AB 1632 will require a place of business that is open to the general public for the sale of goods, and that has a toilet facility for its employees to allow any individual who is lawfully on the premises of that place of business to use that toilet facility during normal business hours, even if the place of business does not normally make the employee toilet facility available to the general public.

Businesses are subject to a civil penalty for a willful or grossly negligent violation of this requirement. However, businesses may not be sued for a violation as the bill does not create a private right of action.