Personal Data Protection Act (PDPA) 2012: Key legislation governing personal data handling in Singapore. Requires consent for sharing personal information, limits disclosure to relevant professional information, and mandates secure storage and transmission of personal data in recommendation letters.

Employment Act (Chapter 91): Singapore's main employment law that requires accuracy in stating employment details and periods. Recommendation letters must stick to factual information about employment and avoid discriminatory statements.

Defamation Act (Chapter 75): Protects against libel and requires all statements in recommendation letters to be truthful and verifiable. Prevents false or misleading statements that could damage reputation.

Workplace Safety and Health Act: Relevant when discussing safety-related performance in recommendation letters. Requires maintaining confidentiality of safety incidents while ensuring accuracy of safety-related claims.

Singapore Contract Law: Governs the legal framework of professional communications. Requires recommendation letters to be truthful, maintain professional standards, and avoid making unsupported promises about future performance.