Being trusted to lock up at your job means someone watched you for months. Don’t blow it in one night.

Keys are never handed over on a good feeling. Somebody spent months watching whether you showed up on time, whether the count was right, whether you cut corners when the place was empty, before they decided. That is a slow case built in your favor. It can be undone by one careless night, because what is being measured is whether you are reliable with nobody watching.

Treat the last twenty minutes of a shift as the part that counts. Follow the closing list even when you are sure you remember it, and lock up alone the same way you would with the manager standing there.