This testimony before the Subcommittee on Labor concerned the implementation of the Occupational Safety and Health Act of 1970 by the Department of Health, Education, and Welfare. The responsibilities of the department under this Act have been carried out through NIOSH. One important NIOSH function has been to conduct research programs directed toward the development or modification of criteria used to recommend health or safety standards for promulgation by the Department of Labor. More than 18 criteria documents were published during the current fiscal year including user registration standards for certain carcinogenic compounds. NIOSH also assisted employers and employees in dealing with immediate short term problems. Three of these were considered in this report: first, technical assistance; second, the technical information services; and third, training programs. Technical assistance included the evaluation of hazards at the work site including the measurement of the quantity of the substance of concern in relation available for absorption by the user, the amount of time the user could absorb the substance, the frequency of exposure, physical form of the substance and presence of other substances. The technical information services available applied not only to highly technical toxicological and medical injuries from large industries and research institutes but also applied to individual problems, such as calls from a wife concerned about the exposures at her husband's place of employment. The training programs embodied the educational arm of NIOSH aimed at workers, employers, and the general public.