Occupational infertility in the male has been a recognized entity since the identification in 1978 of the testicular toxicity of the nematocide 1,2-dibromo-3-chloropropane (DBCP) in factory workers producing it and farm workers using it. DBCP remains the best documented chemical testicular toxin, its effect being confined purely to testicular germinal epithelium. There is increased recognition of employer responsibility for workplace health and safety accompanied by a growing threat of litigation from affected persons. This has led to fertility risks within occupations also being considered, along with the traditional areas of physical and auditory safety and protection from potential carcinogens.