U.S. Equal Employment Opportunity Commission
In general, you treat all of your employees the same way, holding them accountable for their work, rewarding them when appropriate, and imposing disciplinary measures when necessary. You do not base employment decisions on race, color, religion, sex (including pregnancy, sexual orientation, or gender identity), national origin, age (40 or older), disability or genetic information (including family medical history)
In some instances, however, you may need to treat employees differently or deviate from your past behavior or your employee policies.
In these situations, to prevent misunderstandings, it may be helpful to explain to the employee why you are treating him differently.
If there are no circumstances that justify treating the employee differently, you may want to determine whether it is possible to accomplish your objective(s) in a manner more consistent with your past behavior or your employee policies.