can one use an expired passport for for work
Passports tend to expire every 10 years or so. However, even if a passport is expired, it isn't entirely useless. While you can use your old passport to apply for a new one, you can also use it as proof of your U.S. citizenship, even after it has expired. This means that you can use it like regular identification, such as a driver's license, which can allow you to board domestic flights.