An endorsement on a check is a signature on the back of the check. You should endorse it on the left back end of the check. If you make a check out to yourself, you must endorse the back with your signature. If a check is made out to cash, whoever cashes it must endorse it. A two party check must be endorsed by the recipient of the check. In other words, if you make a check out to a second party,
. that party must endorse the back of the check before cashing it. And you must endorse the check exactly as your name is written on the front.