The way you clock in and clock out is part of your testimony.

Character is not something you switch on for particular settings. How you arrive, whether you are honest about hours, how you treat the person taking over from you, all of it is on display for hours a week to people who will never hear you talk about what you believe. That record is doing the talking anyway.

Pick the part of your work you are least proud of, the lateness or the shortcut or the tone when you are tired, and change that one thing this month. Consistency between what you say and how you clock in is the whole point.