noun
conversion to an indefinite-term work contract
A legal term under Japan's Labor Contract Act, referring to the right of a fixed-term worker to convert to a permanent (indefinite) contract after five years of continuous employment.
無期転換ルールは、同一の使用者との間で有期労働契約が通算5年を超えて更新された場合に適用される。
The indefinite-term conversion rule applies when a fixed-term labor contract with the same employer has been renewed for a total of more than five years.
Compound of 無期 (indefinite period) and 転換 (conversion, switch). A modern legal term created to describe the conversion right under the revised Labor Contract Act.