本業への集中力が低下し、体調を崩す可能性があること

Behind the increase in companies allowing side jobs is the expectation of employee skill improvement and income growth. Employees can gain new knowledge and connections outside their main job, which can positively affect their main job. On the other hand, the risk of neglecting the main job or harming one's health due to spending too much time on a side job has also been pointed out. Therefore, individuals who take on side jobs must have thorough self-management skills.