What is contractor prequalification?
Contractor prequalification is checking a contractor's safety record, insurance, training and written programs before they are allowed to start work on your site.
What it means.
OSHA does not require a program by that name. What the construction standards do say is that a prime contractor is not relieved of overall responsibility for compliance by subcontracting, that the prime contractor and any subcontractors share responsibility for subcontracted work, and that employers must initiate and maintain the programs needed to comply with Part 1926, including frequent and regular inspections by competent persons.
Prequalification is how many host employers try to meet those duties in practice. It is a commercial control: a questionnaire, a review of injury rates and written programs, and often membership of a third-party network. Some standards add contractor duties of their own, but there is no general federal prequalification requirement.
In no case shall the prime contractor be relieved of overall responsibility for compliance with the requirements of this part for all work to be performed under the contract.
Where it shows up on a job.
Before a mechanical contractor is booked for a shutdown, the host asks for its recent injury and illness rates, its written safety programs, proof of insurance and training records for the people it plans to send, then decides whether it can work on site and under what conditions.
Where this comes from.
Each source was read on 22 October 2026. Guidance is advice; a regulation is the rule.
- 29 CFR 1926.16Code of Federal Regulations, Title 29. Regulation. Prime contractor and subcontractor responsibility.
- 29 CFR 1926.20Code of Federal Regulations, Title 29. Regulation. Safety programs and inspections by competent persons.
A plain-language definition, not legal advice. For a decision on your site, read the standard that applies to it.
Related terms
- TRIR
TRIR is the number of recordable injuries and illnesses a company had for every 100 full-time workers in a year, so that companies of different sizes can be compared.
- recordable injury or illness
A recordable injury or illness is a work-related case serious enough, under OSHA's recordkeeping tests, that it must be entered on the OSHA 300 log.
- permit to work
A permit to work is a written authorization, signed by someone allowed to sign it, for a specific hazardous job to go ahead under named controls for a set period.
- safety inspection
A safety inspection is a planned look at a workplace, a job, equipment or a procedure, done to find hazards before they cause harm.
In PanoraCompliance Ready (beta): Monthly work hours, the OSHA decisions your people make, and a prequalification scorecard built from records you entered.