A NIOSH study of an Ohio supermarket (SIC-5411) where several employees were reported to have dermatitis is reviewed. A total of 95 percent of the supermarket employees was interviewed and examined. Of these, 27 percent had papular, well circumscribed rashes confined to the upper extremities, with residual blistering or hyperpigmentation. The time of rash onset ranged from April through August. Cases occurred only among cashiers, baggers, and produce clerks. Those with rashes were significantly more likely to have used a tanning salon during the outbreak period. A diagnosis of phytophotodermatitis was made. NIOSH recommended that employees who handled produce wash exposed hands, wrists, and forearms regularly and avoid tanning salons and excessive exposure to sunlight. Other skin disorders among supermarket employees are discussed. Following contact with linear furan coumarins, exposure to long wave ultraviolet light may provoke phytophotodermatitis. The rash is associated with exposure to a wide variety of fruits, flowers, and vegetables. The phytophotodermatitis reaction is typically confined to the initial site of contact and characterized by redness and blistering in the absence of itching and by residual hyperpigmentation. Outbreaks of skin rashes at other supermarkets are reviewed.