“‘This holiday is fundamentally different from all the others we celebrate as a nation. As Samuel Gompers said many years ago: ‘All other holidays are in a more or less degree connected with conflicts and battles of man’s prowess over man, of strife and discord for greed and power, of glories achieved by one nation over another. Labor Day…is devoted to no man, living or dead, to no sect, race, or nation.’ Instead, it is devoted to all Americans who every day struggle and strive to ensure their families, and our nation, prosper.”