15 minutes is costing you $4,200 a quarter

I pulled the clock-in report for a client last month. Twelve FOH staff, every one of them punching in ten to fifteen minutes before their scheduled shift. Every single day.

Nobody told them to. The server shows up early to roll silverware, so we're ready. Two bartenders linger fifteen minutes after their cut, wiping a bar that's already clean, because the manager didn't want to be the one to push them out.

At $17.75 an hour in San Diego, here's what petty looks like:

And every dollar of it is unproductive. Nobody's serving a table at 4:45 when the floor opens at 5:00. You're paying for prep time that should have been built into the scheduled shift, not donated by early arrivals who are really just starting their side work on your clock.

The fix took me five minutes in the scheduling platform. Hard-code a two-minute grace window on clock-ins. Two minutes, not fifteen: if the shift starts at 4:30, the system accepts a punch at 4:28. Anything earlier gets flagged. Then sort your labor report by clock-in time, not just total hours. The pattern shows up in one pay period.