[Ex post opinion on work disability in a payment decision case].

This paper describes a case of ex post opinion in the judgement of work disability for purposes of benefit qualification, in which numerous, frequently contradictory disability certifications by KIZ, WKIZ, ZUS physician-certifiers and court medical opinions were issued. Despite the simplicity of her case, a woman underwent 17 examinations in connection with the opinions and certifications. The court, instead of verifying the opinions and clearing up all doubts through questioning legal experts, submitted subsequent opinions as evidence, and ZUS broke the law by issuing work certification in spite of a legally binding court ruling.