DIESEL MECHANIC
Fixes the trucks that move America. Steady demand, transportable skills, growing complexity with modern emissions systems. Hawaii is not a right-to-work state — union density is higher than average and prevailing wage rules cover most public projects.
The License.
Most states issue a journeyman license (allows you to work under a licensed contractor) and a separate master or contractor license (allows you to pull permits and run your own business). The journeyman license typically requires completing your apprenticeship and passing a written exam; the master/contractor license requires additional field hours — usually 2 years as a journeyman — and a separate exam.
Requirements in Hawaii: confirm current hour and exam requirements directly with Hawaii DCCA — Contractors License Board. Rules update frequently and our data reflects published standards as of early 2025.
The Money.
Pay data for this trade in Hawaii. BLS metro-level data was not available for this combination. National medians shown below.
| Stage | Hourly range | Approx. annual |
|---|---|---|
| Year 1 apprentice | $18–$24/hr | $36,000 – $48,000 |
| Journeyman scale | $28–$45/hr | $56,000 – $90,000 |
| BLS national median | — | $60,010 |
| BLS top 10% | — | $91,860 |
Hawaii is NOT a right-to-work state. Union scale in Hawaii's major metros typically runs 20–40% above the national median. Prevailing wage laws apply to most public-sector projects.
The Path.
Hawaii is a State Apprenticeship Agency (SAA) state — it administers its own apprenticeship programs separately from the federal RAPIDS system. Contact the state labor department directly or visit apprenticeship.gov and filter by state.
- · Teamsters (some fleet positions)
The Exam.
Automotive and diesel technician licensing is not universally required by state — ASE certification is the industry standard and is portable across states. Some municipalities require shop licenses even where state licensing is absent. Prevailing wage requirements in Hawaii apply to most public-sector projects, which ties exam and licensure to wage scale compliance for contractors.
Be honest about pass rates. Many licensing boards do not publish them. When they do, first-time pass rates for journeyman exams in the trades typically run 50–75%. Preparation time varies — most serious candidates spend 60–120 hours on exam prep. Use code books from the correct edition, not what's currently in print.
What recruiters won't tell you.
- 01UTI, Lincoln Tech, WyoTech diesel programs cost $30K–$50K — community colleges do this for under $10K.
- 02Bring-your-own-tools is the norm. Expect to spend $20K+ on your toolbox over your career.
- 03Dealer jobs pay flat-rate (book hours) — top mechanics crush it, slow learners struggle.