Once you reserve a PO Box at the Post Office location, link it to your USPS.com account. You can manage it online instead of the Post Office location. Link a PO Box to an USPS.com Account
Quick Answer. Cashier's checks themselves do not expire as personal checks do. However, the funds behind the check are subject to state escheat laws.
Whatever the Expiration Date Says. Many payroll checks include a restrictive legend that asks the bank not to cash the check if it is older than a certain amount of days. In this case, you should cash it before this expiry date to avoid any hassles.n general, all checks become stale after six months. However, state law may require that banks honor any payroll claim, even if the date on the restrictive legend has passed. In addition, banks typically do not look at the date on a check, so it will likely get cashed.