The HAZWOPER 40-hour regulations for general industry are found in 29 CFR 1910.120. The HAZWOPER standard for the construction industry is 29 CFR 1926.65. Both standards are identical in content. According to OSHA, 40 hours of HAZWOPER training is required for all workers before starting hazardous waste operations. This onsite training course is suited for anyone engaged in hazardous substance removal, cleanup, emergency response, or other activities with exposure risks. The 40-hour HAZWOPER training is recommended to be paired with on-site, job-specific training. This provides the practical, hands-on experience needed to ensure employees are trained to the level required by their job function and responsibility.

The HAZWOPER 24-hour regulations for general industry are found in 29 CFR 1910.120. The HAZWOPER standard for the construction industry is 29 CFR 1926.65. Both standards are identical in content. Employees must receive HAZWOPER training to the level required by their job function and responsibility. HAZWOPER 24 training applies to general site workers, occasional site workers, and all other personnel who will not face daily hazards. For example, equipment operators, general laborers, and supervisory personnel may engage in activities that expose or potentially expose workers to hazardous substances, but not at levels above permissible thresholds. The 24-hour HAZWOPER training is recommended to be paired with on-site, job-specific training. This provides the practical, hands-on experience needed to ensure employees are trained to the level required by their job function and responsibility.

HAZWOPER 8-hour training is required by OSHA as detailed in 29 CFR 1910.120. Training requirements apply to all on-site workers, even those not directly involved with hazardous substances. The potential for contamination requires workers to be fully trained and protected pursuant to the HAZWOPER standard. The HAZWOPER regulations for general industry are found in 29 CFR 1910.120. The HAZWOPER standard for the construction industry is 29 CFR 1926.65. Both standards are identical in content. The OSHA 8-hour recertification requirement applies to employees, managers, and supervisors who have completed 24- or 40-hour HAZWOPER training. Anyone who may be exposed to hazardous substances and health hazards needs HAZWOPER 8 certification. This includes (but is not limited to) general site workers, utility workers, cleanup operations, corrective actions, emergency response, facilities, and more.