Postal Supervisors and Managers Fairness Act of 2023

This bill requires the U.S. Postal Service to provide written proposals to supervisors' organizations 60 days before pay/benefit decisions expire or after new collective bargaining agreements are reached. It directly affects postal supervisors and managers covered by collective bargaining agreements regarding their pay policies, schedules, and fringe benefits. The key mechanism establishes clear timelines for negotiations and mandates that any dispute resolution panel must issue a binding final decision within 15 days of receiving input from both parties. This aims to streamline the process for resolving pay and benefits disputes between the Postal Service and supervisory staff organizations.