Internal Revenue Code: Federal tax provisions governing the taxation of domestic partner benefits, including tax implications for non-married partners

ERISA Compliance: Employee Retirement Income Security Act requirements if applicable to the employer's health plan, affecting benefit plan administration

Affordable Care Act: Federal healthcare law requirements affecting coverage options and requirements for domestic partners

DOMA Repeal Implications: Impact of the Defense of Marriage Act repeal on domestic partnership benefits and recognition

State Domestic Partnership Laws: State-specific requirements for domestic partnership registration and recognition

State Insurance Regulations: State-specific insurance laws and regulations governing domestic partner coverage

State Tax Laws: State-specific tax treatment of domestic partner benefits

Anti-discrimination Laws: State and federal laws prohibiting discrimination in benefits administration

EEOC Guidelines: Equal Employment Opportunity Commission guidelines affecting domestic partner benefits

HIPAA Compliance: Healthcare privacy requirements under the Health Insurance Portability and Accountability Act

Documentation Requirements: Specific requirements for proving domestic partnership status including cohabitation, financial interdependence, age, and relationship duration