Contract Law (Chapter 53B): Primary legislation governing contractual relationships and obligations in Singapore, essential for establishing the legal basis of the service agreement

Civil Law Act (Chapter 43): Fundamental legislation governing civil matters in Singapore, including contract enforcement and remedies

Limitation Act (Chapter 163): Establishes time limits for bringing legal claims, crucial for determining the validity period of the demand

Supply of Goods and Services Act: Regulates the provision of goods and services, setting standards for service quality and contractual obligations

Consumer Protection (Fair Trading) Act: Protects consumers against unfair practices and establishes rights in service contracts

Electronic Transactions Act: Governs electronic transactions and contracts, relevant if services were contracted electronically

Business Names Registration Act: Regulates business registration and naming, important for proper identification of parties in the demand letter

Goods and Services Tax Act: Governs GST obligations and requirements if applicable to the services rendered

Small Claims Tribunals Act: Establishes jurisdiction and procedures for small claims, relevant if claim amount falls within tribunal limits

State Courts Act: Governs proceedings in State Courts, relevant for potential legal action following the demand letter

Supreme Court of Judicature Act: Establishes jurisdiction and powers of Singapore courts in civil proceedings

Common Law Principles: Relevant case law and precedents regarding contract formation, enforcement, and remedies in Singapore

Pre-action Protocol: Requirements under Singapore's civil justice system for actions to be taken before commencing legal proceedings