; (B) notice of, and input into, work hours; (C) eligibility to accrue, on a pro rata basis, employer-provided paid and unpaid time off and other benefits; (D) promotion opportunities; or (E) other terms, conditions, or privileges of employment. (b) Distinctions permitted This section shall not be construed to prohibit differences in rate of compensation, or other conditions, terms, or privileges of employment, of employees of an employer for reasons other than the number of hours the employees are scheduled to work per week, or the expected duration of employment of the employees, including for reasons such as— (1) the date on which the employees are hired; (2) a merit system; or (3) a system that measures earnings by quantity per hour or quality of production. 203. Offer of work to existing employees (a) Written statements required (1) In general Upon hiring an employee, an employer shall— (A) obtain a written statement of the employee’s desired number of weekly work hours and the days and times the employee is available to work; (B) notify the employee that this written statement may be modified in writing at any time during employment