Today is a national holiday; most federal offices are closed. The FLSA does not require you to pay employees who work today (or on any other federal holiday), but you can always choose to do so.
Are you self-employed? There’s a book for that! For essential year-round tax planning and critical business strategy, you’ll want your copy of J. K. Lasser’s Guide to Self-Employment: Taxes, Tips and Money-Saving Strategies for Schedule C Filers - available on Amazon!