The primary goal of this chapter is to examine the research on Workaholism and its implications on employee behavior. Following a brief explanation of the definition of Workaholism, the history of this practice is next discussed. These are followed by a detailed explanation of the fundamental traits of people with Workaholism. Workaholism and contemporary studies studying the effects of Workaholism on employee behaviour are discussed in the next section. To begin, the relationship between Workaholism and employee job performance was investigated. Second, research has examined at the associations between Workaholism and employee engagement. Third, there are research looking into the links between workaholism, burnout, and fatigue at work. Fourth, studies exploring the impact of Workaholism on well-being and job satisfaction are explored, and finally, studies examining the links between Workaholism and work-life or work-family conflict and work-life balance are studied. In conclusion, contrary to popular belief, Workaholism has a detrimental impact on work or working behaviors. Only in a few circumstances has it been seen that the specified job behaviors have a positive effect on job satisfaction. The chapter goes over these research in depth.