Running payroll for an auto repair shop comes down to three things: paying hourly techs for their clock hours, paying flat-rate techs for their flagged hours, and calculating overtime on actual hours worked, even for flat-rate techs. That last part is where most owners slip up, because flat-rate overtime doesn’t work the way it looks. Get the pieces right, and mechanic payroll takes minutes; get them wrong, and you’re looking at back-pay claims.
Here’s how auto repair shop payroll actually works, the flat-rate overtime math the DOL requires, the mistakes that cost shops money, and how to run it without a Sunday-afternoon spreadsheet.
What shop payroll has to get right
Every pay run is really doing two jobs at once. It has to pay each technician the right amount for the work they did, and it has to stay compliant with wage-and-hour laws regarding minimum wage, overtime, and recordkeeping. Hourly techs are the easy part. Flat-rate techs, overtime, and mixed crews are where it gets tricky and where the penalties lie.
Paying hourly vs flat-rate techs
The pay side is straightforward once you know your plan. Hourly techs are paid for the actual hours they’re on the clock. Flat-rate techs are paid for the flagged (book) hours they earn, so a tech who flags 45 hours at $30 per flag hour earns $1,350 for that work. If you’re still deciding how to structure this, see flat-rate vs. hourly mechanic pay. Either way, you can only run it cleanly if you’re tracking both clock time and job time, because you need clock hours for compliance and flagged hours for flat-rate pay.
The flat-rate overtime trap
This is the part shops get wrong. Paying a technician a flat rate does not get you out of overtime. For most independent shops, technicians are owed overtime on the actual hours they work beyond 40 in a week, even when they’re paid by the job.
Here’s the math the Department of Labor requires for flat-rate (piece-rate) pay:
1. Add up the tech’s total earnings for the week (flagged pay plus any production bonuses).
2. Divide by the total hours they actually worked that week. That’s the regular rate for that week.
3. Because the flat-rate pay already covers straight time for every hour, you owe an additional one-half of the regular rate for each hour over 40.
Example: a flat-rate tech earns $480 and works 48 hours in the week. The regular rate is $480 ÷ 48 = $10 an hour. Straight time is already in that $480, so the overtime you still owe is 0.5 × $10 × 8 overtime hours = $40. Total pay for the week is $520.
Two things that trip people up: the regular rate is recalculated every week, because it moves with the tech’s hours and earnings, and you cannot average two weeks together to dodge overtime. Overtime is figured one workweek at a time.
The rules around that calculation
A few more that carry real penalties:
• Minimum wage is a floor. If a slow week leaves a flat-rate tech’s earnings below minimum wage for the hours they worked, you have to make up the difference.
• Non-discretionary bonuses count. A production or “flag” bonus tied to output must be included in the regular rate before you calculate overtime. Only truly discretionary gifts (a holiday bonus not tied to hours) are excluded.
• A flat-rate payroll is not automatically a commission. Some shops assume the retail “7(i)” commission exemption lets them skip overtime. It only applies if strict conditions are met, and flat-rate pay often doesn’t qualify.
• Non-productive time is paid time. Hours spent in training, meetings, or waiting are hours worked and must be paid at least minimum wage.
• State law can be stricter. California owes daily overtime past eight hours, New York has spread-of-hours rules, and where state and federal law differ, the one more favorable to the employee wins.
This is general information, not legal or payroll advice. Wage-and-hour rules vary by state and change, so confirm your setup with a payroll professional or employment attorney.
Keep the records
Federal rules expect you to keep payroll records for about three years and the time records behind them for about two. Those timestamped clock-in and clock-out records are also what protect you if a tech ever files a wage claim, because without them you can’t prove the actual hours you paid overtime on.
Why manual payroll costs you
If you’re building auto repair shop payroll from paper timesheets, a whiteboard, and memory, you’re inviting three problems: math errors on the regular-rate calculation, hours that take an afternoon to reconcile, and disputes when a tech’s paycheck doesn’t match what they think they earned. Every one of those chips at trust and eats time you don’t have.
How to do payroll for a repair shop
1. Track clock hours and flagged hours for every tech, tied to the repair order.
2. Approve timesheets and confirm shift hours, breaks, and overtime.
3. Calculate pay: clock hours for hourly techs and flagged hours for flat-rate techs.
4. Calculate overtime correctly using the regular-rate method above for anyone over 40 hours.
5. Export to payroll or your accounting system and pay on schedule.
6. Keep the records for compliance and your own protection.
How Torque360 helps
Because technicians clock in and log job time in Torque360, auto repair shop payroll starts from real data instead of a reconstruction. The Employee Timesheet report shows each tech’s shift times, breaks, drive hours, and overtime, while flagged job hours are captured for flat-rate pay, all in one place. You can review and approve it from the employee time management dashboard and push clean numbers into QuickBooks rather than rekeying them. The manual-entry errors that cause disputes are eliminated because every hour was recorded as the work happened.
Frequently asked questions
How do you do payroll for an auto repair shop?
Track each tech’s clock hours and flagged hours, approve the timesheets, pay hourly techs for clock hours and flat-rate techs for flagged hours, calculate overtime on actual hours over 40, then export to your automotive technician payroll system and keep the records.
Do flat-rate mechanics get overtime?
Usually yes. At most independent shops, flat-rate technicians are owed overtime on actual hours worked over 40 in a week. Some dealership mechanics are exempt under federal rules. Confirm your situation with an employment attorney.
How do you calculate overtime for a flat-rate mechanic?
Divide the tech’s total weekly earnings by the total hours they worked to get the regular rate, then pay an extra one-half of that rate for each hour over 40, on top of their flat-rate earnings. Recalculate it every week.
How do you pay flat-rate technicians?
Multiply the flagged (book) hours they completed by their flat-rate pay rate. A tech who flags 45 hours at $30 per hour earns $1,350, plus any overtime owed on their actual hours.
Does flat-rate pay count as commission for overtime?
Not automatically. The retail commission exemption has strict conditions, and flat-rate pay often doesn’t meet them, so overtime is usually still owed. Check with a wage-and-hour professional.
