In an effort to characterize workplace related health and safety hazards for children, NIOSH analyzed 1993 data for workers aged less than 18 years from the Survey of Occupational Injuries and Illnesses (SOII). SOII was based on employer reports from approximately 250,000 private industries in the United States. This group of workers incurred an estimated 21,620 injuries and illnesses involving lost work days in this time period. Most of the injuries occurred among persons aged 16 to 17 years. Males accounted for 59% of the cases. The most commonly reported problems were sprains and strains, 31%; followed by cuts and lacerations, 17%; contusions and abrasions, 13%; heat burns, 8%; and fractures and dislocations, 5%. The most frequent employment of the injured or ill persons included eating and drinking establishments (39%), grocery stores (14%), nursing and personal care facilities (6%), and department stores (5%). Food preparation and service was the most frequent occupation followed by cashier, stock handler or bagger, health or nursing aide, and janitor and cleaner. Falls on the same level accounted for 21% of the injuries, overexertion for 17%, striking against objects 10%, contact with hot objects or substances 9%, being struck by falling objects 7%, and being struck by a slipping handheld object accounted for 6%. Due to the fact that SOII excluded some groups of workers these data were thought to be low. More than half the injuries treated at hospitals were to young people who said they had received no training in prevention of the injury they sustained, and a supervisor was present in only 20% of the cases at the time the injury occurred.