Workers Comp for Washington Contractors: What You Actually Need to Know

Here's something that catches a lot of new contractors off guard: Washington State doesn't let you buy workers comp from a private insurance company. Not for most businesses, anyway. We're one of four states that runs a monopolistic state fund through the Department of Labor & Industries (L&I). Ohio, North Dakota, and Wyoming are the others.

That means if you're a contractor in Seattle, Bellevue, Tacoma, or anywhere in Washington, you're paying into the state fund. Period. There's no shopping around for a better deal from Travelers or Hartford. L&I sets the rates, L&I collects the premiums, and L&I handles the claims.

We've been advising Washington contractors on this since 1994, and the number one mistake we see? Guys who think they can skip it because they're "just a sole proprietor" or "only hire subs." Let's clear that up.

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How Washington L&I Workers Comp Actually Works

Every employer in Washington must carry workers comp coverage through L&I (or be approved as a self-insurer, which requires $25 million+ in assets - so that's out for most of us).

The premium has two parts:

• The employer's share - you pay this based on your industry classification and payroll
• The employee's share - you deduct this from your employees' paychecks

Both portions go to L&I. The rates are set annually and vary wildly depending on the type of work.

2025 L&I Rates by Trade (Per Hour Worked)

These are real rates pulled from L&I's rate tables. The "risk class" determines your cost:

Trade / Classification	Risk Class	Employer Rate (per hr)	Employee Rate (per hr)	Total Rate (per hr)
Electrical Wiring	0601	$1.16	$0.47	$1.63
Plumbing	0306	$1.82	$0.65	$2.47
Carpentry - Residential	0510	$2.89	$0.93	$3.82
Roofing	0507	$4.27	$1.38	$5.65
Concrete / Flatwork	0301	$2.45	$0.81	$3.26
Painting - Interior/Exterior	0521	$1.54	$0.56	$2.10
HVAC Installation	0601	$1.16	$0.47	$1.63
Landscaping	0104	$1.73	$0.59	$2.32
General Construction - Commercial	0518	$2.68	$0.87	$3.55
Excavation	0108	$2.12	$0.72	$2.84

What this means in real dollars: If you're a roofing contractor paying a worker $35/hour, your L&I cost is about $5.65/hour on top of that. For a full-time employee working 2,000 hours a year, that's $11,300 annually - just in workers comp. For a three-person crew, you're looking at $33,900/year.

Carpentry contractors aren't far behind. At $3.82/hour total, a crew of four working full-time costs you over $30,000/year in L&I premiums.

Who Must Carry Workers Comp in Washington?

Short answer: If you have employees, you need it. No exceptions, no minimum employee count, no waiting period.

Longer answer:

• You hire one part-time helper for a weekend job? You need coverage for that worker.
• Your spouse works in the business? They need coverage too (unless you specifically elect to exclude them through L&I).
• You're a sole proprietor with no employees? You're not required to carry it for yourself - but you can elect optional coverage. We strongly recommend it, and here's why: if you fall off a roof in Ballard and shatter your ankle, your health insurance might fight the claim arguing it was a work injury. L&I won't.

What About Subcontractors?

This is where contractors in Washington get burned the most.

If you hire a subcontractor who does NOT have their own L&I account and active coverage, L&I considers them your employee. You're on the hook for their premiums - plus penalties and interest going back to the day they started working for you.

Before you hire any sub, verify their coverage. L&I has a free online tool called "Verify a Contractor" at lni.wa.gov. Takes two minutes. Do it every single time.

The Penalties Are No Joke

L&I audits contractors regularly, and they don't mess around. Here's what happens if you get caught without coverage:

Violation	Penalty
Operating without coverage	Up to $2,500/day per employee
Failure to report employee hours	Back premiums + 20% penalty + interest
Misclassifying employees as subs	Back premiums + penalties + potential fraud charges
Late premium payment	10% penalty + 1% monthly interest
Second offense (no coverage)	Up to $5,000/day per employee + criminal misdemeanor

We had a drywall contractor client in Kent who hired three guys off Craigslist for a two-week job. Didn't get them on his L&I account. One of them got hurt. L&I investigated, found the three unregistered workers, and hit him with $38,000 in back premiums, penalties, and the injured worker's claim costs. That one shortcut nearly put him out of business.

Sole Proprietors and Partners: Optional Coverage

If you're a sole prop, partner, or LLC member with no employees, Washington law doesn't force you to carry workers comp on yourself. But here's the math on why you probably should:

Optional L&I coverage for an owner runs about $150-$400/month depending on your trade classification. That gets you:

• Medical treatment for any work injury - no copays, no deductibles
• Time-loss payments (about 60-75% of your wages) if you can't work
• Permanent partial disability payments if you have lasting injuries
• Vocational rehab if you need to switch careers after an injury

Compare that to going without: a broken wrist means $15,000-$25,000 in medical bills (at Harborview, probably more), plus 6-8 weeks of zero income. The L&I optional coverage pays for itself the first time you need it.

How to Set Up Your L&I Account

1. Register with L&I at lni.wa.gov - you'll need your UBI number (from your state business license), EIN, and business information.
2. Identify your risk classification - L&I has over 300 risk classes. Pick the one that matches your primary work activity. If you do multiple types of work, you might need multiple classifications.
3. Report quarterly - Every quarter, you'll file a report listing each employee, their hours worked, and their gross wages. L&I calculates your premium based on hours x rate.
4. Pay quarterly - Premiums are due by the end of the month following each quarter (April 30, July 31, October 31, January 31).

Pro tip: Set up auto-pay. L&I's late penalties start at 10% and add 1% monthly interest. That adds up fast if you forget a quarter.

Experience Modification Factor (Your EMR)

After you've been in L&I's system for a few years, you'll get an Experience Modification Rating. This works similar to how your driving record affects car insurance:

• EMR of 1.0 = Average. You pay the base rate.
• EMR below 1.0 = Better than average. You get a discount.
• EMR above 1.0 = Worse than average. You pay more.

A roofing contractor with an EMR of 0.85 saves about 15% on premiums - that could be $5,000+/year for a small crew. A contractor with an EMR of 1.30 pays 30% more. Over time, safety programs and fewer claims bring your EMR down.

Many general contractors on big projects around Seattle (the Rainier Square tower, all that South Lake Union construction) won't hire subs with an EMR above 1.0. Your EMR directly affects your ability to win work.

Workers Comp vs. General Liability - They're Not the Same Thing

We get this question weekly: "I have general liability, so I'm covered, right?"

No. They cover completely different things:

	Workers Comp (L&I)	General Liability
Covers	Injuries to your employees	Injuries/damage to third parties
Example	Your roofer falls off a ladder	A shingle falls and hits a homeowner's car
Required by	State law (L&I)	Contracts, clients, licensing
Who pays claims	L&I state fund	Private insurance carrier
Cost basis	Hours worked x rate	Revenue, payroll, or square footage

You need both. They're not interchangeable. A general liability policy will never pay a workers comp claim, and L&I will never cover damage you cause to someone else's property.

Contractor Licensing and Workers Comp

To get (or keep) your Washington State contractor license through L&I, you must:

• Have an active L&I workers comp account (if you have employees)
• Carry a surety bond ($12,000 for general contractors, $6,000 for specialty)
• Have current liability insurance
• Pass the required trade exams

If your L&I account lapses, your contractor license gets suspended. We've seen guys lose out on jobs because their L&I account was suspended over a $200 missed payment. Check your account status regularly.

How We Help Contractors in Washington

Workers comp through L&I is mandatory, but the rest of your insurance package - general liability, commercial auto, inland marine, builder's risk, umbrella - that's where we go to work for you. We shop 15+ carriers to build a package that fits your trade and your budget.

We also help you understand how your L&I costs interact with your other coverage, and we can refer you to good safety consultants who'll help bring that EMR down.

Call us at (425) 777-1858 or stop by our Westlake Ave office. We've been covering Seattle-area contractors for 30 years, and we'll give you straight answers about what you need.