A more thorough explanation:

Definition: Moonlighting is when someone works more than one job at the same time. This usually means that a person has a primary job during regular working hours and a second job outside of those hours to earn extra money.

For example, someone might work a 9-to-5 job during the day and then work at a restaurant or retail store in the evenings or on weekends. This is called moonlighting because the person is working during the "moonlight" hours when most people are not working.

Some employers allow moonlighting because it can be a way for employees to earn extra money and gain new skills. However, other employers may have policies that prohibit moonlighting because they are concerned about conflicts of interest, job performance, or misuse of company resources.

For instance, federal employees are not allowed to receive income from more than one federal government source. This means that a federal employee cannot work for two different government agencies at the same time.

Overall, moonlighting can be a way for people to supplement their income and gain new experiences, but it is important to be aware of any policies or restrictions that may apply.