This hearing addressed the issue of whether the delays in producing a proposed National Institute for Occupational and Safety Health (NIOSH) study on the possible health hazards associated with video display terminals (VDTs) are due to concerns about scientific methodology or unwarranted interference by the Office of Management and Budget (OMB). The following witnesses made statements before the committee: (1) Barbara J. Easterling, executive vice president, accompanied by David LeGrande, occupational safety and health representative, and Lou Gerber, legislative representative, Communications Workers of America; (2) James M. Melius, Director, Division of Surveillance, Hazard Evaluations and Field Studies, NIOSH, accompanied by Theresa Schnorr, NIOSH, and Gooloo Wunderlich, Public Health Service; (3) Hubert F. Owens, counsel, BellSouth Corporation, accompanied by Melissa Hess, industrial engineer, and Brian MacMahon, chairman of epidemiology at the Harvard School of Public Health. The following prepared statements, letters, and supplemental material were submitted in addition to the prepared statements of the above witnesses: (1) prepared statement on behalf of American Telephone and Telegraph, by James P. Dunn; (2) prepared statement on behalf of the Newspaper Guild, by Charles A. Perlik, Jr.; (3) letter by Karen Nussbaum, Service Employees International Union to Honorable Joseph M. Gaydos; and (4) letter by John J. Sweeney, Service Employees International Union, to Congressman Gaydos. (EW)