Idaho Electrician Supervision Requirements: Ratios, Rules, and On-Site Standards

The Two Ratios You Need to Know

Idaho Code Section 54-1010 sets hard caps on how many apprentices a single licensed electrician can supervise, and those caps change depending on the type of work site.

Residential job sites: one licensed electrician to a maximum of six registered apprentices (1:6 ratio).

Commercial and industrial job sites: one licensed electrician to a maximum of two registered apprentices (1:2 ratio).

These are not guidelines — they are statutory limits. A contractor running a commercial job with one journeyman and four apprentices is in violation unless the apprentices qualify for the advanced-apprentice exception described below. The distinction between residential and commercial/industrial is based on the job site classification, not the contractor's license type.

Who Counts as a Supervisor

The supervisor must hold an active Idaho Master, Journeyman, or Residential Electrician license. "Active" means currently issued and not lapsed, suspended, or placed on inactive status. The supervisor must be physically present on the job site and available during working hours — remote supervision does not satisfy the requirement.

This matters for hour verification too. When an apprentice submits Work Verification Forms to DOPL, the supervising electrician listed on those forms must have held an active license in the state where the work occurred during the period being claimed. Hours logged under someone who was unlicensed or lapsed during those dates get disqualified during DOPL's audit.

The 6,000-Hour Exception

The strict ratios are lifted for advanced apprentices who meet both of two conditions: they have completed at least 6,000 documented OJT hours, and they are currently enrolled in or have completed the four-year sequence of approved related instruction (576 total classroom hours). Apprentices meeting these thresholds are considered experienced enough to work at a higher ratio, though they still require on-site supervision from a licensed electrician.

If you are managing crew composition, this distinction matters. A third-year apprentice with 5,800 hours still falls under the strict 1:2 commercial ratio, even if they are weeks from crossing the threshold.

Attestation and Legal Liability

When verifying an apprentice's hours, both the supervising electrician and the employer's authorized representative must sign the Work Verification Form. The signature carries a perjury attestation — they are certifying under penalty that the hours are accurate and that all active supervision standards were maintained throughout the claimed period.

DOPL audits these forms. The primary rejection triggers include listing a supervisor whose license was inactive during the claimed work dates, claiming excessive overtime hours without paycheck stubs to verify them, and leaving any field blank on the form (a supervisor's license number, email, or phone number). Any of these results in the application being sent back.

What Violation Looks Like

Operating with an improper apprentice ratio is a compliance violation. If DOPL discovers that an apprentice worked outside legal supervision standards, those hours are at risk of being disqualified from the apprentice's total — which can set back their Journeyman eligibility by months or years.

For contractors, the liability extends beyond licensing. Work performed by improperly supervised apprentices can be flagged during electrical inspections, and municipalities with their own enforcement programs (Boise, Meridian, Idaho Falls) may apply their own local enforcement processes.

The Idaho Electrician License Guide includes a crew-composition worksheet that helps contractors verify their ratio compliance before starting each job.

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