There are multiple definitions - click on the translation that matches your context.

gwarancja stałego zatrudnienia

rzeczownik

full

security of tenure

noun

Comparative law notes

Poland

.

Definitions of security of tenure

English

guaranteed permanent employment, especially as a teacher or a lecturer etc, usually after an initial trial period

We've abolished security of tenure for any newly appointed staff.

English

the guaranteed right to occupy or hold a building, land, or other real property, usually for a specified length of time

The Contract is conditional upon the superior landlord's consent being granted and also the parties obtaining a court order to exclude the security of tenure.