Protecting LiteBlue USPS News LinkBlue Lite is a user-friendly online platform provided by United States Postal Service. It is designed for easy access to worker perks, schedules, compensation, and more. Using Liteblue, USPS employees can stay updated about their employment details, connect with colleagues, and organize various HR tasks. Lite Blue USPS aims to streamline USPS operations and establish a more productive work environment.