Employment Act (Cap. 91): Primary legislation governing employment relationships in Singapore. Essential for clearly differentiating subcontractor status from employment relationships to avoid misclassification. Provides reference points for working hours, safety conditions, and basic terms.

Work Injury Compensation Act (WICA): Establishes framework for work injury compensation and insurance requirements. Critical for defining liability and insurance obligations in subcontractor relationships, especially in high-risk work environments.

Workplace Safety and Health Act: Outlines safety obligations, responsibilities, and risk management requirements for all workplace arrangements, including subcontractor relationships.

Contract Law (Common Law): Fundamental principles governing contract formation, terms and conditions, and remedies for breach under Singapore's common law system.

Building and Construction Authority (BCA) Regulations: Specific regulations for construction-related work, including licensing and registration requirements for contractors and subcontractors.

Personal Data Protection Act 2012 (PDPA): Governs the collection, use, and disclosure of personal data. Relevant for handling subcontractor's personal information and privacy considerations.

Companies Act: Contains registration requirements and corporate governance rules applicable when engaging with subcontractor companies.

Central Provident Fund Act: Relevant for understanding contribution obligations and avoiding misclassification of subcontractor relationships as employment relationships.

Immigration Law: Covers work pass requirements and regulations for foreign subcontractors working in Singapore.