Benefits Programs and Key Dates AboutuspscomBlue Lite is a user-friendly online platform provided by United States Postal Service. It is created for easy access to staff benefits, timetables, payroll, and more. Using Lite Blue, USPS employees can stay well-informed about their employment details, connect with colleagues, and handle various HR tasks. Blue Lite USPS aims to streamline USPS operations and create a more effective work environment.