This guide states the law of workplace harassment and the practice of workplace investigations. Part 1 covers the statutory framework and the elements of a hostile environment claim. Part 2 covers employer liability, including the Faragher-Ellerth affirmative defense, the Vance definition of supervisor, and the negligence standard for coworker and third-party conduct. Part 3 covers retaliation. Part 4 covers the administrative process and limitations. Part 5 sets out the standards for a defensible investigation, from intake through report. Part 6 covers privilege, confidentiality, and preservation. Part 7 covers remedies and damages caps. Later parts address arbitration, settlement restrictions, union and public-sector overlays, and state variations.