This book is based on the research study on teacher job dissatisfaction which was conducted in Magu District, Tanzania. The purpose of the book is to share the insights on teacher dissatisfaction based on the findings of the study. The research's main objective was to identify factors influencing the current teacher job dissatisfaction in public secondary schools in Magu District. The objectives were to identify the relationships between demographic factors and teacher job dissatisfaction; to identify factors influencing secondary schools teacher job dissatisfaction; to measure teachers' levels of job dissatisfaction based on factors related to work; and to identify significant changes which can influence higher level of teacher job satisfaction. A number of theories were used including situational theories; dispositional approaches and interactive theories.