Teacher's vacation leave usage exceeding eight weeks bars supplementary sick leave entitlement under Polish law.

The Supreme Court dismissed the teacher's cassation appeal regarding his right to supplementary vacation leave due to illness. The lower courts ruled that because the teacher utilized 8 weeks of vacation leave during the school year, he was ineligible for additional leave for his subsequent sick period. The Supreme Court upheld this decision, interpreting the Teacher's Card to strictly limit supplementary leave to a maximum of 8 weeks regardless of the reason for unused vacation time.