The primary option for obtaining a Singapore work visa without a job offer is through the Overseas Networks & Expertise (ONE) Pass. This scheme is designed for top-tier professionals, entrepreneurs, or researchers with proven achievements and international recognition. Applicants must typically meet a high minimum salary threshold, or demonstrate significant contributions in business, academia, or the arts. Unlike employer-sponsored passes, the ONE Pass allows holders to work for multiple employers or establish businesses. It provides greater flexibility but is restricted to a small pool of elite global professionals.