Handbook EL-312 - Employment and Placement - Contents 7 Assignment, Reassignment, and Promotion 71 Introduction 711 Organization Most Postal Service positions are filled by qualified career employees (exclu..." /> Handbook EL-312 - Employment and Placement - Contents 7 Assignment, Reassignment, and Promotion 71 Introduction 711 Organization Most Postal Service positions are filled by qualified career employees (exclu..." />