Leisure occupies our existence, from the poor to the rich, from the pupil to the student, from the worker to the boss, from the single to the married, from the woman to the man, from the infant to the elderly. Is this invasion justified among workers? This study discusses the extra-occupational activities and performance of workers in the Democratic Republic of Congo (case study conducted in Lubumbashi). In the context of our study, this book seeks to determine whether the extra-occupational activities practiced by workers in the city of Lubumbashi have a positive influence on work performance. In the affirmative, this relationship is evident. With this in mind, two qualitative methods were adopted, one consisting of naturalistic observation and the other allowing for in-depth study of the targeted cases, supplemented by interviews, observation and discourse analysis.