Day clock vs job clock: tracking time for hourly shop crews

Every shop that pays people by the hour has a clock of some kind. The question is what it’s for. A day clock tells you who was here and for how long, which is what payroll needs. A job clock tells you what those hours were spent on, which is what you need to know whether a job made money. Most shops need both, and the trick is getting them from the same hours.

This is practical guidance, not legal advice. Wage-and-hour rules vary by state; check yours or ask an employment advisor.

What each clock answers

Compare	Day clock	Job clock
Question	Who’s here, and how many hours do we pay?	What did those hours go into?
Used for	Payroll, overtime, attendance	Job costing, quoting, efficiency
Starts when	The person starts work	The person starts on a job or operation
Ends when	They finish for the day	They stop, switch jobs or go on a break

A shop with only a day clock knows its payroll but guesses at job cost. A shop with only a job clock knows job cost but has gaps in the payroll record wherever nobody was on a job: sweeping, waiting, fetching parts, the walk to the parts store. Those gaps are still paid time.

Direct time and shop time

Inside the paid day, every hour is one of two kinds:

• Direct time: on a customer job or a production operation. This is the time that goes into job cost.
• Shop time (indirect time): cleaning up, maintenance, training, waiting on parts, moving vehicles, meetings. It’s real, it’s paid, and it’s overhead.

Neither is bad. A shop needs both. What hurts is not knowing the split, because then shop time hides inside job times (making jobs look expensive) or vanishes (making the shop look cheaper to run than it is).

Why job time belongs inside the day clock

The cleanest setup is one clock with two layers:

1. The person clocks in for the day.
2. Inside that, they clock onto a job or an operation, and off it when they stop or switch.
3. Any paid time that isn’t on a job is shop time automatically.
4. They clock out for the day.

Done that way, payroll and job costing come from the same record. Job time can’t add up to more than the paid day, and shop time is just the difference, so nobody has to fill it in.

The awkward cases

Breaks and lunch

Clock off the job for breaks so they don’t land on a customer’s job. Whether a break is paid is a separate question. Under the federal Fair Labor Standards Act, short rest breaks (the Department of Labor’s fact sheet says “usually 20 minutes or less”) are counted as hours worked, while a bona fide meal period, typically 30 minutes or more where the employee is completely relieved from duty, generally isn’t (DOL Fact Sheet #22). Many states have their own break rules on top.

Waiting on parts

When a tech is waiting on a part, the job isn’t moving and shouldn’t keep collecting hours. Clock them off it and onto shop time or another job. The DOL’s hours-worked fact sheet treats someone who is “engaged to wait” on the job as working, so the wait is paid either way; the question is just where it lands.

Cleanup and end-of-day

Cleaning a bay after a job is a judgment call. Some shops count it as part of the job; most leave it as shop time. Pick a rule and use it everywhere, so job times are comparable.

Comebacks and rework

Time spent fixing your own work should not go on the customer’s new invoice, but it should be recorded. Clock it to the original job (or a rework operation on it) so the original job’s real cost includes the comeback.

Staying late

If someone stays to finish a job, those hours count. The DOL’s position is that work “suffered or permitted” is work time that must be paid, whether or not it was requested (DOL Fact Sheet #22). A clock that makes it easy to record the time honestly protects both sides.

Flat-rate and hourly techs

Many auto shops pay techs flat rate: a set number of hours per job, from a labor guide or the shop’s own menu, whatever the job actually takes. Flat rate is a way of calculating pay. It doesn’t remove the need to know actual hours:

• For non-exempt employees, federal law requires a record of hours worked each day and each workweek, among other items (DOL Fact Sheet #21).
• Minimum wage and overtime are assessed against hours worked. Some mechanics and sales and parts staff at automobile dealerships fall under a specific federal exemption from overtime only, not minimum wage (DOL Fact Sheet #11). Whether any exemption applies to your shop is a question for an advisor.
• Even setting compliance aside, flat-rate hours vs clocked hours is one of the most useful numbers a service manager can have. It shows which jobs are priced right and which aren’t.

Hourly crews (common in fab and machine shops) are simpler: the day clock is the payroll record, and the job clock inside it is the job cost.

Fixing mistakes: time-change requests

People forget to clock out. They clock onto the wrong job. It happens daily in every shop. How you fix it matters:

• Don’t let anyone quietly edit hours, including managers. A silent edit is how trust in the clock disappears.
• Use time-change requests: the person asks for the correction with a reason, a manager approves or declines it, and both the original and the change are kept.
• Do it promptly. A correction requested the same day is accurate; one requested at the end of the pay period is a guess.

Records matter here too. The DOL fact sheet says payroll records must be kept for at least three years, and the records wage computations are based on (time cards, work schedules and so on) for two years, and that any timekeeping method is acceptable as long as it is complete and accurate (DOL Fact Sheet #21).

A shared kiosk or personal phones?

• A shared kiosk (a tablet on the wall, each person with their own PIN) works for crews who don’t carry phones on the floor, and it puts the clock where people walk past it.
• Personal phones work for people who move around: service writers in the lot, techs between bays, someone on a parts run.

Most shops end up with both. Either way, the person clocking in must be the person working, so give everyone their own PIN or login.

The numbers worth watching

You don’t need a dashboard of twenty metrics. Two ratios, computed from your own clock, tell you most of what you need:

• Direct share of paid hours = hours on jobs ÷ total hours clocked for the day. It shows how much of the paid day reaches customer work. Track it per person and per week, and watch the trend rather than chasing a number someone else quotes.
• Actual vs planned hours per job = clocked job hours ÷ the hours you quoted or the flat-rate hours. Over 1.0 means jobs take longer than you’re charging for. Look for patterns by job type.

When direct share drops, the reason is usually visible in the shop time: a week of waiting on parts, a machine down, training a new hire. That’s the point of tracking it: the conversation is about real hours, not impressions.

Doing this in ShopJig

ShopJig’s time clock works this way: people clock in for the day, then onto jobs or fab operations, and time that isn’t on a job is shop time. There’s a shared iPad kiosk with PINs, time-change and time-off requests with manager approval, and a payroll export with PTO (ShopJig doesn’t run payroll itself). Job time feeds each job’s actual cost. More on the shop time clock app.

Sources

• U.S. DOL Fact Sheet #21: Recordkeeping Requirements under the FLSA: https://www.dol.gov/agencies/whd/fact-sheets/21-flsa-recordkeeping
• U.S. DOL Fact Sheet #22: Hours Worked under the FLSA: https://www.dol.gov/agencies/whd/fact-sheets/22-flsa-hours-worked
• U.S. DOL Fact Sheet #11: Applying the FLSA to Automobile Dealerships: https://www.dol.gov/agencies/whd/fact-sheets/11-flsa-auto-dealers