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Protection and training
  • The OSHA permissible exposure limit for benzene is one part benzene per million parts of air.
  • Employers must provide employees with training before permitting them to work with benzene.

The Occupational Safety and Health Administration (OSHA) sets a permissible exposure limit of one part of benzene per million parts of air (1 ppm) in the workplace during an eight-hour workday, 40-hour work week at 1910.1028.

To achieve compliance, administrative or engineering controls must first be determined and implemented whenever feasible. When these controls are not feasible to achieve full compliance, protective equipment or any other protective measures must be used to keep the exposure of employees to air contaminants within the limits prescribed in the regulation. Any equipment and/or technical measures used for this purpose must be approved for each particular use by a competent industrial hygienist or other technically qualified person.

Employees who have contact with this chemical must understand the hazards and the methods of control associated with these hazards.


The employer must provide employees with information and training at the time that they are initially assigned to a work area where benzene is present. If exposure is above the action level, employees must be provided with information and training at least annually thereafter.

The employer must also:

  • Provide employees with an explanation of the benzene standard, Appendix A and Appendix B;
  • Indicate to them where the standard is available; and
  • Describe the medical surveillance program and information contained in 1910.1028, Appendix C.