在ざい籍せき専せん従じゅう者しゃMeaningsNoun1. full-time trade union officer who remains employed at a companyKanji used在presence籍registry専specialty従obey者someoneComposed of在ざい籍せきbeing enrolled (at a school); being registered; being a member (of a team, organization, etc.)Noun専せん従じゅう者しゃperson doing one job exclusively; full-time worker; full-time union officialNoun