Fair Labor Standards Act (FLSA): Federal law governing employment standards including minimum wage, overtime pay, and worker classification. Critical for determining service provider classification as contractor vs employee.

Internal Revenue Code: Federal tax regulations that impact contractor classification, tax reporting requirements, and tax implications for service provider relationships.

Americans with Disabilities Act (ADA): Federal law ensuring equal access and non-discrimination for individuals with disabilities, relevant if services involve public accommodations or accessibility requirements.

Federal Trade Commission Act: Federal consumer protection law governing unfair or deceptive business practices, relevant for service provider contracts involving consumer services.

Digital Millennium Copyright Act (DMCA): Federal law addressing digital copyright issues, particularly relevant for service providers offering digital, online, or content-related services.

State Labor Laws: State-specific regulations governing employment relationships, worker protection, and service provider classifications, which may be more stringent than federal requirements.

State Contract Laws: State-specific regulations governing contract formation, enforcement, and interpretation, including any specific requirements for service agreements.

State Licensing Requirements: State-specific professional licensing and permit requirements for various types of service providers.

HIPAA: Health Insurance Portability and Accountability Act - Federal law governing privacy and security of healthcare information, crucial for healthcare-related service providers.

GDPR/CCPA: Data privacy regulations (General Data Protection Regulation and California Consumer Privacy Act) affecting handling of personal data in service provision.

Statute of Frauds: Legal doctrine requiring certain types of contracts to be in writing to be enforceable, particularly relevant for service contracts extending beyond one year.

IRS Classification Guidelines: Federal guidelines determining worker classification as independent contractor vs employee, critical for structuring service provider relationships.

Insurance Requirements: Professional liability, general liability, and workers' compensation insurance requirements that may apply to service providers under federal and state laws.

Uniform Commercial Code (UCC): Standardized commercial laws adopted by states, particularly relevant if the service contract includes any goods or materials.