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"Length of Service" 2026 — New Rules Allowing Periods Other Than Employment to Count Towards Seniority

"Length of Service" 2026 — New Rules Allowing Periods Other Than Employment to Count Towards Seniority

The act of 26 September 2025 amending the Labour Code took effect on 1 January 2026. Employees will be able to count towards their length of service periods of professional activity other than employment under a contract of employment — including self-employment, mandate contracts and work abroad. We explain who is covered, when, and how to document those periods.

Olga Wierzbicka Olga Wierzbicka ·