委員【いいん】
committee member
議員【ぎいん】
member of an assembly, member of the Diet, member of parliament, member of Congress
会員【かいいん】
member, the membership
委員会【いいんかい】
committee, commission, board, panel, committee meeting
職員【しょくいん】
staff member, employee, worker, personnel
社員【しゃいん】
company employee, member of a corporation, company stockholder (esp. in legal contexts)
全員【ぜんいん】
all members, all hands, everyone, everybody, whole crew
役員【やくいん】
director, executive, officer, official, person in charge
従業員【じゅうぎょういん】
employee, worker
定員【ていいん】
fixed number (of people), prescribed number (of regular personnel, students, etc.), quota, numerical limit, complement, capacity (of a bus, boat, theatre, etc.), seating capacity
公務員【こうむいん】
government worker, public servant, civil servant
人員【じんいん】
number of persons, personnel
教員【きょういん】
teacher, instructor, teaching staff, faculty member
党員【とういん】
party member
店員【てんいん】
employee (of a store), shop assistant, clerk, salesperson
一員【いちいん】
one person, one member
特派員【とくはいん】
(special) correspondent (e.g. for a newspaper), representative, delegate
乗組員【のりくみいん】
crew (of a ship, airplane, etc.), crew member
満員【まんいん】
full house, no vacancy, sold out, standing room only, full (of people), crowded
動員【どういん】
mobilization, mobilisation