Timesheet Rounding
Many employers round clock-in and clock-out times to a neat increment — the nearest 5, 6 or 15 minutes — before totalling a timesheet. Rounding is legal within limits, and the limits are the interesting part.
Why rounding exists, and the rule that governs it
Rounding predates software: paper timesheets were totalled by hand, and quarter hours kept the arithmetic sane. US federal regulations (29 CFR §785.48) expressly allow rounding to the nearest 5 minutes, tenth of an hour (6 minutes) or quarter hour, provided it averages out — used fairly, it must not systematically underpay employees over time. Rounding that always lands in the employer's favour, or rounding policies paired with discipline for the minutes rounded away, are where employers get into trouble. Other countries have their own rules; some forbid rounding worked time down at all.
Quarter-hour rounding: the full map
| Clock minutes | Rounds to |
|---|---|
| :00 – :07 | :00 |
| :08 – :22 | :15 |
| :23 – :37 | :30 |
| :38 – :52 | :45 |
| :53 – :59 | the next hour (:00) |
So a 9:07 start is recorded as 9:00, a 9:08 start as 9:15, and a 5:53 finish as 6:00. Over a week of random arrival times the downs and ups roughly cancel — that cancellation is exactly what the regulation's "averages out" condition is about. Note the finishing-time asymmetry in practice: rounding a clock-out up gives the employee minutes, rounding it down takes them away, and a fair system does both as the clock falls.
The other increments
Nearest 6 minutes (a tenth of an hour) is the billing world's increment: each 0.1 of an hour is 6 minutes, so times land on :00, :06, :12 … and feed straight into decimal invoices — 0.1, 0.2, 0.3. Nearest 5 minutes is the mildest common scheme, moving a time by at most 2 minutes. Software increasingly skips rounding entirely and totals exact minutes, converting once at the end — the method the time card calculator here uses, because exactness costs nothing in a browser.
Checking your own timesheet
If your payslip hours look short, reconstruct one week exactly: take your real clock times, total them with the duration calculator without rounding, then compare against the rounded figure your employer used. A difference of a few minutes either way is rounding doing its job; a difference that grows in one direction every week is not. Keep your own record of actual times — in many disputes, the employee's contemporaneous log is the evidence that matters.
Frequently asked questions
- Is timesheet rounding legal?
- In the US, yes, within the federal limits described above: nearest 5, 6 or 15 minutes, applied neutrally so it averages out. State rules can be stricter, and some jurisdictions elsewhere do not allow rounding down worked time at all.
- What exactly is the 7-minute rule?
- The nickname for quarter-hour rounding's halfway point: the first 7 minutes of a 15-minute block round down, the last 8 round up. Clock in at :07 and you are paid from :00; at :08, from :15.
- Can my employer round only my start times?
- A policy that systematically favours the employer — rounding starts up and finishes down, for instance — fails the "averages out" condition and is a recognised red flag. Neutral application to both ends of the shift is the standard.
- Does rounding apply to the day total or each clock time?
- Traditionally to each clock-in and clock-out time, then the rounded times are totalled. Some systems instead total exact minutes and round the day. Either can be compliant if neutral; the per-time method is the classic one the ranges above describe.