1. people who work at a second job, especially in the evening or at night, in addition to their regular daytime employment
Usage: plural form

Examples

• Many teachers are moonlighters who work retail jobs on weekends.
• The company hired several moonlighters to cover the night shift.
• Moonlighters often struggle to balance their two jobs.
• The restaurant employs mostly moonlighters who have day jobs elsewhere.
• Some moonlighters work online freelance jobs from home.
• The survey found that 30% of employees are moonlighters.