Hawaii Subcontractor Insurance Requirements for General Contractors

Hawaii is one of the most expensive and logistically complex states to run construction in. Between the Hawaii General Excise Tax (GET), strict workers' comp rules, and Chapter 104 prevailing wage requirements on government jobs, small GCs on the islands face compliance layers that mainland states don't have. This guide breaks down exactly what you need from every subcontractor before they set foot on your jobsite.

TL;DR: Hawaii requires workers' comp for every employee (including part-time), imposes a 4–4.5% General Excise Tax that subs must be licensed to collect, and applies Chapter 104 prevailing wage rules on all state and county contracts over $2,000. Collect a current COI, W-9, Hawaii GET license number, and—on public projects—certified payroll from every sub before they start work.

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Hawaii Contractor Licensing

The Hawaii Contractors License Board (under the Department of Commerce and Consumer Affairs, DCCA) licenses contractors doing work valued at $1,000 or more in labor and materials.

License Categories

License Type	Scope
B – General Building	Construction, alteration, repair of structures
B-1 – General Engineering	Highways, grading, utilities, marine construction
C Specialty Licenses	38+ trades: electrical, plumbing, roofing, HVAC, etc.

Key rules for GCs:

• A B or B-1 license holder can self-perform work within their license scope
• Specialty work outside your license must be subcontracted to a licensed specialty contractor
• License must be current (renewed biennially) and posted at the jobsite on request
• Unlicensed contracting is a misdemeanor; the $1,000 threshold is low enough to catch almost any real job

Before you hire a sub: Verify their license on the DCCA License Search portal. An expired or suspended license voids their ability to legally contract—and your GC license can be endangered if you knowingly use unlicensed subs.

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General Liability Insurance Requirements

Hawaii does not set a single statewide minimum GL limit for all private construction. However:

• State and county contracts typically require $1,000,000 per occurrence / $2,000,000 aggregate at minimum
• Larger commercial owners and project lenders often require $2M/$4M or higher
• Your subcontract should spell out the required limits—don't rely on the sub's default policy

For the certificates your subs hand you, check:

1. Occurrence vs. claims-made form — occurrence is standard for construction; claims-made is a red flag
2. Your company listed as additional insured — use ACORD 855 endorsement language for Hawaii work
3. Waiver of subrogation — especially important on wrap programs
4. Policy expiration dates — Hawaii's isolation means you can't always get a quick replacement sub; expired coverage on an active project is a serious exposure

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Workers' Compensation in Hawaii

Hawaii runs one of the most employee-friendly WC systems in the country. The rules are administered by the Disability Compensation Division (DCD) under DLIR.

Who Must Be Covered

Hawaii requires WC coverage for any employer with one or more employees, including:

• Part-time and seasonal workers
• Day laborers paid by the hour or day
• Workers on single-day jobs
• Out-of-state subs bringing their own workers into Hawaii

There is no minimum hours-per-week threshold. If someone works for you and gets paid, they need to be covered.

Hawaii WC Benefit Rates

• Temporary Total Disability (TTD): 2/3 of the worker's average weekly wage
• State Average Weekly Wage (SAWW): Updated annually; used to cap TTD payments
• Permanent Partial Disability (PPD): Based on a scheduled disability rating

Hawaii's benefit levels are among the highest in the nation when combined with the state's high wages, which also drives up premiums significantly.

WC Exemptions

Corporate officers in a corporation can exempt themselves if they:

• Own at least 25% of the corporation's stock, AND
• File an exemption with their WC insurer and DLIR

Sole proprietors and general partners are automatically excluded from WC coverage (they aren't employees), but can elect coverage if they want it.

LLC members follow corporation officer rules if their membership interest is ≥25%.

What this means for your COI collection: A sub who files a WC exemption must provide you with a copy of their approved exemption certificate—not just a certificate of insurance. If they have no employees other than exempt officers, their COI will show a WC exclusion; you need the exemption certificate on file to justify that gap.

Out-of-State Subs Working in Hawaii

If a California or Texas sub brings their own crew to Hawaii, their home-state WC policy must either:

1. Include a Hawaii endorsement (most standard policies cover all U.S. states), OR
2. They must purchase a separate Hawaii policy

Ask for this specifically when hiring mainland subs for Hawaii jobs. Many mainland GCs have been burned by policies that exclude Hawaii.

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Hawaii General Excise Tax (GET)

This is the compliance item that surprises mainland GCs most. Hawaii has no traditional sales tax—instead, it imposes a General Excise Tax (GET) on every business doing business in the state:

Location	GET Rate
Oahu (Honolulu County)	4.5% (4% state + 0.5% surcharge)
Maui, Hawaii County, Kauai	4.0%

What This Means for You and Your Subs

• Every subcontractor doing business in Hawaii must have a Hawaii Tax ID / GET license from the Hawaii Department of Taxation
• The GET is technically on the seller (sub), but is commonly passed through to the buyer (you, the GC)
• Your contract with the owner should address GET passthrough — it adds real money on large contracts
• Subs without a GET license are not in compliance with Hawaii law

Before a sub starts work, ask for their Hawaii Tax ID (GE-xxxxx number). You'll also need it if you're issuing 1099-NEC forms.

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W-9 and 1099 Requirements

Federal 1099-NEC rules apply in Hawaii just as in any other state: you must issue a 1099-NEC to any unincorporated subcontractor paid $600 or more in a calendar year.

Hawaii-specific nuance: The state does not require a separate Hawaii version of the 1099. However, Hawaii participates in the IRS Combined Federal/State Filing program, so your federal 1099 filing also satisfies Hawaii's reporting requirements—provided you file correctly.

Collect a W-9 from every sub before the first payment. The W-9 captures:

• Legal name and business name
• Business entity type (sole prop, LLC, S-corp, etc.)
• TIN (EIN or SSN)
• Certification of exempt status if applicable

The IRS penalty for each missing or incorrect 1099-NEC is $310 per form (2024 rate). In Hawaii, where subcontractor relationships tend to be longer-term due to the limited labor pool, failing to track W-9s across multiple years compounds fast.

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Lien Waiver Laws in Hawaii

Hawaii's mechanics lien statute is found in HRS Chapter 507 (specifically §507-42 through §507-47).

Preliminary Notice Requirement

Unlike many states, Hawaii requires preliminary notice to preserve lien rights:

• Deadline: Within 45 days after first furnishing labor, materials, or equipment
• Who must file: Subcontractors and material suppliers (GCs have automatic lien rights)
• Where filed: The Circuit Court in the judicial circuit where the property is located
• Fee: Small filing fee required

If a sub doesn't file their preliminary notice within 45 days, they lose the right to file a mechanics lien. This matters to you because a sub who hasn't preserved their lien rights may get paid last—and may become difficult to manage when money gets tight.

Mechanics Lien Deadlines

Milestone	Deadline
File lien	Within 45 days of completing work (or project completion, whichever is later)
Enforce lien	Within 1 year of filing

Lien Waivers for Hawaii Projects

Hawaii does not have a standardized lien waiver form, unlike states such as California or Texas. Use your attorney's form or a commercially available unconditional/conditional lien waiver template that complies with HRS Chapter 507.

Best practice: Collect a conditional lien waiver from subs with each progress payment draw, and an unconditional lien waiver at final payment. Keep these in your project file for at least 6 years (the statute of limitations for contract claims in Hawaii).

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Chapter 104 Prevailing Wage Requirements

For state and county government construction projects over $2,000, Hawaii's Chapter 104 HRS requires:

• Prevailing wages must be paid to all workers (laborers, mechanics, truck drivers)
• GC is responsible for collecting and verifying certified payroll from all subs and sub-subs
• Certified payroll records must be submitted to the Hawaii Workforce Development Division
• Wage schedules are published by trade and county; check current rates on the DLIR website

Unlike federal Davis-Bacon (which has its own threshold and enforcement), Chapter 104 applies to Hawaii state agency and county contracts. Many Hawaii infrastructure, school, and government facility projects fall under Chapter 104—and failing to collect subs' certified payroll can result in the GC's payment being withheld.

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Hawaii-Specific Compliance Risks

Island Logistics and Insurance Delays

When a sub's policy expires on Oahu and they're working on Maui, getting a binder from their mainland insurer takes time. Build 30-day advance expiration warnings into your COI tracking system. Don't let a lapse slip because the sub is on another island and "the paperwork is coming."

Limited Subcontractor Pool

Hawaii's construction market is small and tight-knit. GCs often work with the same subs for years—which breeds familiarity and sloppy compliance habits. "We've worked with Keola's Electrical for 10 years" is not a defense in a WC audit or lien dispute. Require the same documents from longtime subs as you would from a new one.

Jones Act and Materials Costs

Materials shipped to Hawaii from the mainland must use U.S.-flagged vessels under the Jones Act. This adds 20–40% to material costs and often causes delays. Make sure your subs' pricing reflects this reality—a sub who low-bids without accounting for freight may cut corners on insurance.

County-Specific Rules

Hawaii's four counties (Honolulu, Maui, Hawaii County/Big Island, Kauai) each have their own building departments and permit requirements. A sub licensed statewide still needs to pull county permits and pass county inspections. Verify that your subs understand the local permit process for each island you're working on.

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Hawaii Subcontractor Compliance Checklist

Use this before any sub starts work:

• Contractor's license verified on DCCA portal (current, correct category)
• Certificate of insurance received with:
  • GL coverage (limits matching your contract requirements)
  • WC coverage (or valid exemption certificate on file)
  • Your company named as additional insured on GL
  • Policy expiration dates noted and tickled for renewal
• Hawaii GET license number collected (GE-xxxxx)
• W-9 collected before first payment
• WC exemption certificate collected if sub has no non-officer employees
• Chapter 104 certified payroll setup confirmed (for government jobs)
• Preliminary notice filed by sub if required (within 45 days of first work)
• Lien waiver process established (conditional with each draw, unconditional at final)

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How PaperBoss Helps Hawaii GCs

Tracking COI expirations, WC exemptions, W-9s, and GET license numbers across multiple subs on multiple islands is exactly the kind of manual work that falls through the cracks when you're busy building. PaperBoss automates COI collection and expiration tracking, stores W-9s and exemption certificates in one place, and flags missing documents before they become project-stopping problems.

With a free trial, you can upload your current sub roster and start catching compliance gaps today—without a spreadsheet.

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Frequently Asked Questions

Do all subcontractors in Hawaii need workers' comp insurance?

Yes. Hawaii requires workers' comp for any employer with one or more employees, including part-time workers. A sub with no employees (just an exempt corporate officer) must provide a valid WC exemption certificate instead of a WC policy.

What is the Hawaii General Excise Tax and do my subs need it?

The GET is Hawaii's version of a business tax on gross receipts, ranging from 4% on neighbor islands to 4.5% on Oahu. Every subcontractor doing business in Hawaii must hold a Hawaii GET license. Ask for their GE-number before they start work.

Does Hawaii have prevailing wage requirements for construction?

Yes. Hawaii Chapter 104 HRS requires prevailing wages on state and county construction projects over $2,000. The GC is responsible for collecting certified payroll from all tiers of subcontractors on covered projects.

What is the preliminary notice deadline for mechanics liens in Hawaii?

Subcontractors and suppliers must file a preliminary notice within 45 days of first furnishing labor or materials to preserve their mechanics lien rights under HRS Chapter 507. Missing this deadline eliminates their lien rights.

Can corporate officers in Hawaii waive workers' comp coverage?

Yes, if the officer owns at least 25% of the corporation's stock. They must file an exemption with their insurer and DLIR. As a GC, collect the exemption certificate—don't just accept a COI that shows a WC exclusion without documentation explaining why.

What contractor license do I need to work as a general contractor in Hawaii?

A B (General Building) contractor license covers construction, alteration, and repair of buildings and structures. A B-1 covers general engineering work. Both are issued by the Hawaii Contractors License Board (DCCA). Work valued at $1,000 or more requires a license.