First, make the arithmetic explicit
Rounding maps a timestamp to an interval. Under ordinary nearest-quarter-hour rounding, 06:50 is nearer to 06:45 than 07:00 and therefore rounds to 06:45. At an exact halfway point, the tie rule must be specified. Other rounding policies may deliberately round only forward or only backward, producing different results.
Scroll the table sideways to read all columns.
| Original time | Nearest quarter hour | Difference |
|---|---|---|
| 06:50 | 06:45 | Five minutes earlier |
| 06:55 | 07:00 | Five minutes later |
| 17:04 | 17:00 | Four minutes earlier |
| 17:11 | 17:15 | Four minutes later |
Whether those differences increase or decrease paid duration depends on which endpoint is being rounded and what work occurred. A symmetric-looking rule is not evidence that its effect on a workforce is neutral.
Do not confuse three decisions
The captured punch is evidence of an event. A grace period classifies attendance relative to a schedule. A payroll rule determines compensable time under the applicable requirements. These concepts should not be collapsed into a single edited timestamp.
For example, a five-minute arrival grace period may change whether the attendance engine labels a person late. It does not automatically authorize removing five minutes of work from pay. Similarly, a scheduled start is not universally the point at which compensable work begins.
Scope any legal conclusion
In the United States, the Department of Labor explains that work suffered or permitted can be compensable, including work not specifically requested. Lack of prior approval is not, by itself, a basis to treat that work as unpaid. See DOL Fact Sheet 22.
Rules differ by jurisdiction and context. This article does not determine whether a particular rounding practice is lawful for your workforce. Have the actual policy, data and applicable rules reviewed before relying on it.
Test the effect rather than the label
Keep the underlying events and calculate a comparison set: unrounded duration, rounded duration, break deductions and the resulting difference per worker and period. Investigate systematic losses, boundary patterns and actual work outside scheduled hours. A total company average can conceal recurring effects on individuals.
Retention also needs a purpose and applicable rule. Do not retain every timestamp, selfie and biometric template permanently merely because storage is available.
Attendify’s boundary
Attendify calculates minute-based attendance using schedules, grace settings and configured breaks/overtime. That does not make it a global wage-compliance engine or a promise of a configurable rounding product. Review timesheet calculations and break examples, then reconcile the receiving payroll treatment separately.