National Labor Relations Act (NLRA): Federal law that protects employees' rights to discuss working conditions and engage in protected concerted activity. Social media policies must not restrict these protected activities.

First Amendment: Constitutional considerations regarding free speech rights, particularly important for public sector employees. Requires balance between employee expression and employer interests.

Electronic Communications Privacy Act (ECPA): Federal law governing the monitoring and interception of electronic communications, affecting how employers can monitor employees' social media use.

Stored Communications Act (SCA): Federal law protecting stored electronic communications, limiting employers' ability to access private social media accounts.

Equal Employment Opportunity Laws: Including Title VII, ADA, and ADEA, ensuring social media policies don't discriminate against protected classes or create hostile work environment.

Copyright Act: Federal law protecting original works, relevant for content ownership and sharing on social media platforms by employees.

FTC Guidelines: Federal Trade Commission requirements for disclosure of sponsored content and endorsements, particularly relevant for employees posting about company products/services.

State Social Media Privacy Laws: Various state-specific laws protecting employees' private social media accounts and limiting employer access to personal social media information.

Industry-Specific Regulations: Specialized requirements such as HIPAA for healthcare and FINRA for financial services, affecting social media usage in regulated industries.

Trade Secret Laws: Protection of confidential business information that must be addressed in social media policies to prevent unauthorized disclosure.