This popular casebook provides a comprehensive overview of the constitutional, statutory, regulatory, and common law principles of employment law. The doctrinal development of the law is assessed in light of contemporary economic, technological, social, and political conditions. The 9th edition includes a more detailed treatment of independent contractors and gig workers, sexual orientation and gender identity discrimination under Title VII, updates on employee health coverage, and the Secure Act of 2019 dealing with small employer retirement plans. Among the statutes covered by the casebook are Title VII of the Civil Rights Act of 1964, Age Discrimination in Employment Act, Americans with Disabilities Act, Family and Medical Leave Act, Employee Retirement Income Security Act, and Worker Adjustment and Retraining Notification Act.