This text discusses aspects of slip trip and fall accidents. It covers the basics of surface interaction physics, including friction and lubricants, before delving into slip resistance, surface testing and surface roughness. Also covered are issues of footwear, and foot-floor surface interaction; stairs, ramps and handrails; as well as outdoor slips - influenced by such things as weather and environment; and visual effects and distractions. The text focuses on risk assessment and control of such hazards, discusses options for safety management plans, and addresses the issues of lawsuits and fraud with respect to these hazards.