Gay rights pioneer Frank Kameny will be inducted into the U.S. Department of Labor's Hall of Honor on Tuesday, June 23.

Secretary of Labor Thomas E. Perez will be present at the ceremony, which will take place at 3 PM at the agency's national headquarters.

Kameny, who died in 2011 at the age of 86 of natural causes in his Washington D.C. home, was fired by the United States government because he was gay. The instance prompted him to co-found the Mattachine Society of Washington, one of America's earliest gay rights groups. He is also credited for coining the phrase “Gay is good.”

Kameny worked tirelessly to force the federal government, the nation's largest employer, to end discrimination based on sexual orientation in its employment practices.

The department's Hall of Honor recognizes the contributions of men and women for the betterment of “work, workers and workplaces in America.”

Previous honorees include Cesar Chavez, Samuel Gompers, Mother Jones, Frances Perkins, Charles Walgreen, Helen Keller and Walter Reuther.