Job satisfaction is a central concept in work and organizational psychology as it is associated with important individual as well as organizational outcomes. Work is the number one activity that occupies most of adults' waking time. Being satisfied with one's job, which is defined as a pleasurable or positive emotional state resulting from the appraisal of one's job or job experience, is related to important work-related and health-related outcomes (e.g., higher job performance, organizational commitment, organizational citizenship behavior, life satisfaction, lower absenteeism and lower counterproductive work behavior). This book discusses determinants of job satisfaction as well as workplace implications and the impact job satisfaction has on the psychological well-being of individuals.