Guide
Working time records: what the law requires of an employer
Working time records are not an optional practice but a statutory duty of the employer. It applies to a small company with even one employee.
Updated 21.9.2026. This guide is general information, not legal advice — check the regulations in force from the authority's own guidance.
What the law requires
The Working Hours Act requires the employer to record the hours worked and the compensation paid for them, per employee. The records must be retained and produced on request to the occupational safety authority and at the request of an employee or their representative. Failure to comply can be penalised. The exact provisions and retention periods are worth checking in the Act in force, because the details have changed over the years.
What goes into the records
In practice the records must show the hours worked and when they fell, additional and overtime hours separately, and the increments paid for them. Sunday work and on-call duty are also separated out where they occur. The entry must be per employee and reliable: a slip filled in afterwards from memory is a poor starting point if the matter is ever examined.
Why a paper slip is a risk
Time records on paper suffer from three problems. They are often filled in afterwards, so the figures are estimates. They get lost or soaked. And they have to be transferred to payroll by hand, which creates a fresh chance of error. Electronic entry removes all three, as long as the entry is made alongside the work and not at the end of the month.
Overtime visible immediately
Overtime must be recorded separately and requires the employee's consent. When hours are entered daily and overtime stands out in a column of its own, the accumulation is visible all the time rather than only at the end of the pay period, when nothing can be done about it.
Who may see the records
An employee has the right to be informed of their own entries. In practice this means the system must show the employee their own hours. On the employer's side, only those whose duties require it handle the data.
FAQ
Do working time records cover part-time and seasonal workers too?
Yes. The duty covers employees in an employment relationship regardless of how long the relationship or the working hours are.
Is a spreadsheet enough for working time records?
The law does not prescribe a tool, so a spreadsheet will do if the data is correct and is retained. The problem is practical: a spreadsheet is usually filled in afterwards and changes leave no trace.
How long must the records be kept?
The Working Hours Act has a retention period of its own, traditionally tied to limitation periods for claims. Check the provision in force, because this is a typical point where outdated guidance lives on online for a long time.
How Kirjus helps here
In Kirjus the employee enters the hours on a phone alongside the work, overtime goes into a field of its own and the supervisor approves the entries. The accumulation is visible at all times, and approved hours produce both the payroll summary and the invoice for the customer.
Read also
Time logging
The employee logs hours on a phone against a site and a work type, and the supervisor approves them. Overtime, breaks and billability are handled separately. Try it free for 30 days.
Reports
Hours by employee and by site, a daily allowance summary and cost tracking for the chosen period.