Host employer responsibilities under NFPA 70E apply every time an outside electrician, testing crew, or equipment vendor works on your electrical system. Contractor electrical safety is a shared job. Both NFPA 70E and OSHA place duties on the facility that brings contractors in, as well as on the contractor. This guide explains those duties in plain language and gives industrial facilities a practical checklist for building a contractor electrical safety program. Bowtie Engineering helps facilities across the United States and Canada put the pieces in place, from arc flash labels to lockout/tagout procedures and training.
Host Employer and Contract Employer Defined
The host employer is the company that owns or operates the facility and brings in outside workers. The contract employer is the company whose employees come on site to do the work, such as an electrical contractor, a testing firm, or an equipment service provider.
Both employers have responsibilities, and neither one can hand all of the risk to the other. A contract that says the contractor is responsible for safety does not remove the host employer’s own duties.
Host Employer Responsibilities Under NFPA 70E
NFPA 70E sets out three core host employer responsibilities:
- Inform the contract employer of known hazards covered by NFPA 70E that relate to the contractor’s work and that the contractor might not recognize
- Provide information about the installation that the contract employer needs to complete its own risk assessment
- Report observed violations by contract employees to the contract employer
In practice, that means sharing arc flash labels and study results, one-line diagrams, known equipment problems, and site rules before work begins, and speaking up when you see unsafe work.
Contract Employer Responsibilities Under NFPA 70E
The contract employer has matching duties. It must make sure each of its workers is instructed in the hazards the host employer communicated, and that each worker follows the work practices NFPA 70E requires. The contract employer should also report back to the host employer any hazards it finds during the work that the host did not communicate. That two-way exchange is what keeps both sides working from the same picture of the risk.
How OSHA’s Multi-Employer Citation Policy Applies
OSHA can cite more than one employer for the same hazard. Under the OSHA Multi-Employer Citation Policy, an employer can be a creating employer (it caused the hazard), an exposing employer (its workers were exposed), a correcting employer (it was responsible for fixing the hazard), or a controlling employer (it had general authority over the worksite).
A host facility often acts as the controlling employer. That means OSHA can expect it to exercise reasonable care to prevent and detect violations, even when contract workers are the ones exposed.
Lockout/Tagout Coordination With Outside Contractors
OSHA 1910.147 has a specific rule for outside personnel. Whenever contractors perform servicing or maintenance covered by the lockout/tagout standard, the onsite employer and the outside employer must inform each other of their energy control procedures. The onsite employer must also make sure its own employees understand and follow the restrictions of the outside employer’s program.
Contractor coordination belongs in your written energy control program. Bowtie Engineering’s lockout/tagout programs cover contractor coordination along with group lockout, shift changes, and machine-specific procedures for every serviceable asset.
What to Include in Contractor Prequalification
Prequalification is the step that keeps unprepared contractors off your electrical equipment in the first place. A short, consistent review before any contract is signed saves time on the day of the work and gives you a record that you exercised reasonable care. Ask every electrical contractor for:
- A copy of its written electrical safety program and lockout/tagout program
- Training records showing NFPA 70E training within the last three years for each worker coming on site
- How the contractor decides which workers are qualified for specific tasks
- The arc-rated PPE and voltage-rated tools its crew will bring
- Its process for job briefings and energized electrical work permits
- Its recent safety performance and how it handles incidents and near misses
Keep the answers on file with the contract. If the scope of work changes, ask again before the new work begins.
Contractor Electrical Safety Program Checklist
Before Contractors Arrive
- Confirm the contractor has a written electrical safety program
- Ask for training records showing contract workers are trained for the specific tasks
- Share arc flash labels, study results, and current one-line diagrams
- Share known hazards, equipment problems, and site electrical rules
- Exchange lockout/tagout procedures and agree on how group lockout will work
- Agree on who will issue and approve any energized electrical work permit
On the Day of the Work
- Hold a job briefing with both host and contractor representatives
- Confirm PPE matches the arc flash labels on the equipment
- Verify the electrically safe work condition before work begins
- Observe the work and report any violations to the contract employer
After the Work
- Document what was done and any hazards found
- Record corrective actions for any reported violations
- Update one-line diagrams and the arc flash study if equipment or settings changed
- Review lessons learned before the next contractor job
Common Gaps in Contractor Electrical Safety
Facilities often run into the same problems with contractor work:
- Labels and one-lines that are out of date, so the information shared with contractors is wrong
- No written record that hazards were communicated
- Contractors following their own lockout program without coordinating with the host
- Equipment changes made by contractors that never reach the arc flash study
- Facility staff unsure whether they are allowed to stop unsafe contractor work
Most of these gaps come down to information and authority. Contractors can only work safely with hazard information that is accurate and current, and your own people need clear permission to pause a job when something looks wrong. Write both into your contractor electrical safety program. Name who on your side owns contractor coordination for electrical work, who keeps labels and one-line diagrams current, and who has the authority to stop work. Then make sure every contractor hears the same message at the first job briefing.
How Bowtie Engineering Helps Host Employers
A contractor electrical safety program depends on accurate information and trained people on your side. Bowtie Engineering provides the core pieces: arc flash studies with labels and updated one-line diagrams, lockout/tagout programs that include contractor coordination, and NFPA 70E electrical safety training for the facility staff who oversee contractors.
For service-contract clients, the BowVue platform keeps arc flash data, PPE requirements, maintenance records, one-line drawings, and qualified-worker assignments in one cloud-based dashboard, so the information you share with contractors is current.
Frequently Asked Questions
Does a contractor’s safety program replace the host employer’s duties?
No. The contractor must follow NFPA 70E and train its own workers, but the host employer still has to share known hazards and installation information and report violations it observes.
Should contractors follow the host’s lockout program or their own?
OSHA requires both employers to inform each other of their procedures. Agree in advance on how lockout will work, and make sure your own employees understand and follow the outside employer’s restrictions.
Can OSHA cite the host employer for a contractor’s violation?
Yes. Under the Multi-Employer Citation Policy, a host facility acting as the controlling employer can be cited if it did not exercise reasonable care to prevent and detect violations.
What information should a host employer give an electrical contractor?
Share known electrical hazards, current arc flash labels and study results, up-to-date one-line diagrams, site electrical rules, and your lockout/tagout procedures before the work begins.
Do electrical contractors need NFPA 70E training?
Yes. NFPA 70E requires the contract employer to make sure its workers follow the standard’s safe work practices and are instructed in the hazards the host communicated. Ask for training records before the job starts.
Want your labels, procedures, and training ready before the next contractor arrives? Call Bowtie Engineering at 866-730-6620 or contact the team online.