This guide presented some of the important attributes which successful hearing loss prevention programs have incorporated. The items were presented as they affect three different levels of those responsible for program implementation: management; those who implement the hearing loss prevention programs; and those affected by exposure to noise or ototoxic chemicals. The report identified seven components of a successful system: noise exposure monitoring, engineering and administrative controls, audiometric evaluation, use of hearing protection devices, education and motivation, record keeping, and program evaluation. The hearing loss prevention program audit was discussed as an additional component. The audit should be performed prior to any program being started so that a zero point is established. For measuring the success of the program, two basic approaches were considered. The first assessed the completeness and quality of the components of the program using checklists, and the second evaluated the audiometric data using results of audiometric tests for both individuals and for groups of employees exposed to hearing hazards.