Published October 2026.
Direct Answer: A workers’ compensation proposal is a premium worksheet, not a policy: it lists the named insured, classification codes, estimated payroll by class, rates per $100 of payroll, an experience modification factor when applicable, and the math that produces estimated annual premium plus taxes, fees, and any schedule credits or dividends. Read it by matching each class code to real job duties, confirming payroll aligns with audit records, and reconciling rates, ex-mod, and fees against carrier filings and your prior term.
Contractor owners and office managers often paste proposal lines into search or an assistant asking what each label means. Layouts differ, but bureau math is consistent in most states. This decoder walks a typical quote so you can judge whether classification is defensible, payroll is realistic, and the premium build-up matches manual rules. For coverage, classification law, and experience rating context, see workers’ compensation insurance: coverage, classification, and experience rating.
The anatomy of a workers’ comp proposal
The proposal is a stack of boxes feeding “total estimated premium.” The bound policy later adds insuring agreements, conditions, and exclusions—the same document layers described in how to read insurance policy declarations, insuring agreements, conditions, and exclusions. The quote holds numbers tied to manual rules, not full policy text.
Named insured through payroll basis
Legal name, DBA, address, and term must match the operating entity on licenses and payroll. Each class code row splits estimated annual payroll—the exposure base, not sales—and attaches a description. Governing classification rules pick the principal code at a location; manual definitions, not proposal shorthand, control audit. Officer and subcontractor assumptions usually sit in footnotes.
Rates per $100 of payroll
Each code shows a rate, typically dollars per $100 of payroll, filed with the state bureau or approved by the department of insurance unless a signed program deviates. The page should state whether rates are manual, filed, or net of labeled credits.
Experience modification factor (ex-mod)
Experience-rated accounts show a multiplier such as 0.85 or 1.15 applied to eligible premium after class totals. Below 1.00 reflects better-than-average loss experience for your size and mix; above 1.00 reflects worse. A renewal quote with no ex-mod when you had a bureau factor last year is incomplete until the factor loads.
Premium computation subtotal
Labels vary—“manual premium,” “subject premium,” “modified premium,” “standard premium”—but the sequence is fixed: class premium from payroll and rates, sum, apply ex-mod, apply schedule credits or debits, premium discount tiers, then taxes and surcharges. “Subject premium” is defined in the FAQ because carriers attach the label to different subtotals.
Discounts, dividends, and schedule credits
Schedule credits reflect filed underwriter discretion for safety, management, size, and loss trend within caps. Premium discount is a volume percentage at defined premium breakpoints. Dividends are post-term pool distributions, not guaranteed premium cuts; treating them as certain savings misstates the quote.
Fees, taxes, and surcharges
State workers’ compensation assessments, subsequent injury funds, safety surcharges, and policy fees sit below pure loss-cost premium. Unlabeled program or admin fees need a written explanation.
Class codes — what the four digits mean
In most voluntary markets, codes come from the National Council on Compensation Insurance (NCCI) manual or a state variant. A code names a rate-making category of work—not a license title alone and not a one-off task. Code 5403 (carpentry NOC) versus 5645 (residential carpentry) shows how split definitions change rate while the trade looks similar.
NCCI and governing classification. Manual descriptions and footnotes include or exclude activities. Governing class is the best single description of operation at a location when several codes could fit. Auditors reassign payroll among codes when job records contradict the quote.
How misclassification happens. Typical errors: payroll parked in a lower-rated code while crews perform higher-rated work; clerical codes for staff who routinely visit active jobs; supervisors coded as clerical despite production labor; missing incidental codes for roofing, excavation, or delivery. Misclassification lowers the proposal while raising audit charges, cancellation risk, and dispute risk on claims tied to undisclosed work. Keep job descriptions and time records aligned with the codes on the page.
State exceptions. Monopolistic funds and independent bureaus use local manuals. Familiar four-digit numbers may follow different rules. Ask which manual and filing support the rates on the page.
Why payroll is the exposure base
Premium scales with payroll because payroll proxies exposure hours and wage severity used in indemnity benefits. Rates per $100 let underwriters price workforce size without guessing margin. General liability often uses sales or payroll by class; compare structure in commercial general liability insurance coverage structure.
Per $100 of payroll. Rate $8.50 with payroll $500,000 yields ($500,000 ÷ 100) × $8.50 = $42,500 before ex-mod.
Auditable payroll and remuneration. Audit compares estimate to actual wages, overtime, bonuses, and included fringes; officer pay follows election and caps. Understated payroll bills additional premium at audit. Quotes also assume certificates for insured subs or payroll charges for uninsured sub labor—program design across lines is covered in commercial insurance program design, CPP, and specialty lines.
How the premium is actually computed
One class, one rate, one payroll, one ex-mod—your real worksheet may list many codes and minimum premiums.
| Step | Input | Calculation | Result |
|---|---|---|---|
| Class premium | Code 5437, commercial carpentry; payroll $800,000; rate $6.25 / $100 | ($800,000 ÷ 100) × $6.25 | $50,000 manual premium |
| Experience mod | Ex-mod 1.10 | $50,000 × 1.10 | $55,000 modified premium |
| Schedule credit | 10% on modified | $55,000 × (1 − 0.10) | $49,500 |
| Premium discount | 5% tier per filing | On filing-defined base | Varies by state |
| Surcharges | State assessment 2% | 2% × eligible premium | Added after credits |
Confirm which subtotal ex-mod hits. Request the bureau experience worksheet if the factor shifts without a loss history you recognize.
Discounts, dividends, and schedule credits
Schedule credits and debits must show as labeled percentages within filing caps. Premium discount is a volume tier on specified premium after ex-mod. Dividends are post-term pool payments unless a filed program guarantees them; loss severity trends affect pools—see social inflation, nuclear verdicts, and the insurance pricing spiral in 2026. Package quotes may tie credits to bundled lines; reconcile stand-alone and packaged options on the same payroll split—business owners policy coverage structure and eligibility.
Red flags in a proposal
Rates materially below filing without a labeled credit or deviation program; missing ex-mod on an experience-rated renewal; class lines without code numbers; fees with no filing reference; payroll splits that contradict job cost; silence on audit type and subcontractor certificates; and a total that will not reproduce from payroll, rate, and ex-mod on a calculator. Align incident reporting with broker workflow—see FNOL, duty to report dangerous conditions, and notice requirements.
FAQ
What does each section of a workers’ comp proposal actually mean?
The header identifies the named insured and policy term. Class code rows split estimated payroll by type of work and attach a rate per $100 of payroll to each row. The experience modification factor adjusts the summed class premium for prior loss experience when you are experience-rated. Subtotals show manual, modified, and final premium after schedule credits, premium discount, taxes, and surcharges. Footnotes and remarks define officer inclusion, subcontractor rules, audit type, and dividend eligibility. Each section is an input to premium calculation or a disclosure of assumptions that will be verified at audit or bind.
What is the difference between a class code and a rate?
A class code categorizes work for rating purposes and determines which manual rules, exclusions, and footnotes apply. A rate is the price per $100 of payroll assigned to that code in a state filing for a given carrier after loss costs, expenses, and profit provisions. The same code can have different rates among carriers filing in the same state. Changing the code changes both the legal classification of exposure and the rate; changing carriers may change the rate while the code stays the same.
Why is payroll the exposure base for workers’ comp?
Payroll measures the scale of employee labor exposed to injury and correlates with wage levels used to calculate indemnity benefits. Workers’ compensation systems price most policies by multiplying filed rates times payroll divided by 100 because it is verifiable on tax and audit records and scales with hiring. Using payroll keeps premium aligned with workforce size rather than with revenue that may fluctuate for reasons unrelated to injury exposure.
Where does the experience modification factor appear on a proposal and how does it change the premium?
It usually appears as a single multiplier—such as 0.92 or 1.08—on a line labeled experience mod, EMR, or ex-mod, applied after manual premium is summed for experience-rated classes. The proposal shows manual or standard premium, multiplies by the factor to produce modified premium, then applies credits and surcharges. A factor above 1.00 increases premium relative to average experience; below 1.00 decreases it. If the line is blank or 1.00 on a renewal that previously had a bureau factor, confirm the rating worksheet before binding.
What does “subject premium” mean?
Subject premium is the portion of premium that enters a specific calculation step, such as experience rating, premium discount, or a state surcharge base. On some proposals the label refers to premium after schedule credits but before ex-mod; on others it means premium after ex-mod and before taxes. Read the proposal footnotes or ask the broker which subtotal is “subject” for each percentage shown. Reconcile by rebuilding the calculation: class payroll to manual premium, apply ex-mod to the correct subtotal, then apply each credit or surcharge to the filing-defined base.
What are the red flags that a workers’ comp proposal is wrong or incomplete?
Rates materially below filed rates with no documented credit program; missing or unchanged ex-mod when your account is experience-rated; payroll splits that do not match operations or prior audits; class descriptions without code numbers; fees without explanation; assumed subcontractor certificates you do not maintain; and total premium that cannot be reproduced from payroll, rates, and ex-mod on a calculator. Any of these warrant written correction before bind, because audit and classification corrections will follow the policy term, not the quote presentation.