A Singapore work visa, officially referred to as a work pass, is a legal document issued by the Ministry of Manpower (MOM) that allows foreign nationals to work in the country. The main categories include the Employment Pass (EP) for professionals, the S Pass for mid-skilled workers, and the Work Permit for basic-skilled roles. Each visa type has unique eligibility criteria, such as minimum salary, academic qualifications, or sector-specific rules. Work passes regulate both entry and employment conditions, ensuring that foreign workers complement the local labour force in Singapore.