Employment Act (Chapter 91): Primary legislation governing employment relationships in Singapore. Covers basic terms and conditions of employment, with 2019 amendments extending coverage to all employees except domestic workers and seafarers. Critical for documenting changes in employment terms and conditions.

Employment (Part-Time Employees) Regulations: Specific regulations governing part-time employment arrangements. Essential when employment status changes involve transitions between full-time and part-time work.

Tripartite Guidelines on Fair Employment Practices: Guidelines issued by MOM, NTUC, and SNEF to ensure fair treatment during employment changes. Provides framework for implementing employment status changes fairly and transparently.

Central Provident Fund Act: Governs mandatory social security savings system. Employment status changes may affect CPF contribution rates and obligations for both employer and employee.

Income Tax Act: Tax legislation that needs to be considered as employment status changes may have implications for tax treatment and obligations.

Employment of Foreign Manpower Act: Regulates employment of foreign workers. Any change in employment status must align with work pass requirements and restrictions for foreign employees.

Personal Data Protection Act (PDPA): Governs the collection, use, and disclosure of personal data. Relevant for handling employee information during status change process.

Industrial Relations Act: Regulates relations between employers and trade unions. Important when employee is union member, as collective agreements may impact employment status changes.