Loss prevention aims to establish policies, procedures, and practices to prevent loss of inventory and money in a retail environment. The three main categories of loss are administrative failures, external theft, and internal theft. Administrative failures include paperwork errors by employees that can account for 15-20% of annual losses. External theft includes shoplifting and robberies. Internal theft, primarily employee theft, is often the largest contributor to loss. Loss prevention strategies include careful hiring, inventory control, developing internal theft policies, and minimizing employee temptation through positive work environments and perks.