It's 'business as usual' for the United States Postal Service.
A spokesperson for USPS tells 2 On Your Side that post offices will be open Monday, Christmas Eve. Some smaller offices will close early at noon.
President Donald Trump signed an Executive Order Tuesday giving all federal employees the day off on Christmas Eve, but USPS says that it does not apply to postal service employees.
As for delivery services, USPS says that they will have delivery right through Christmas Day, including Sunday.