What is umowa zlecenie and how is it different from umowa o pracę or B2B?
Umowa zlecenie (contract of mandate) is a civil-law contract, distinct from both umowa o pracę (standard payroll employment under the Kodeks pracy) and B2B (sole-proprietor invoicing). It covers roughly 13% of the Polish workforce and sits in between: since 2025 it carries mandatory ZUS social insurance by default, unlike the flexible arrangement it used to be, but it still lacks the Labour Code protections (notice period, severance, paid leave) that umowa o pracę guarantees.