Multifactor Authentication Required for Access to LiteBlueBlueLite is a user-friendly online platform provided by United States Postal Service. It is developed for trouble-free access to employee perks, calendars, payroll, and additional. Using Lite Blue, USPS employees can stay well-informed about their job details, connect with colleagues, and manage various HR tasks. Blue Lite USPS aims to streamline USPS operations and establish a more efficient work environment.