Short answer
There is no honest single number. Your premium is built from a handful of inputs: payroll by workers comp class code, your experience mod, how many trucks you run and how far they go, your revenue or payroll for general liability, the limits the MSA forces you to buy, and your loss history. Change any one of them and the price moves.
- Workers comp in Texas is priced per $100 of payroll in each class, then adjusted by your experience mod and any schedule rating credits or debits your insurer has on file.
- The MSA is a cost driver too. It sets the limits, the extra policies and the endorsements you have to carry, so two crews of the same size can pay very different amounts.
Why nobody can quote you a number off a web page
Insurance is priced on exposure, and every policy you carry measures exposure differently. IRMI defines the exposure base as "the basis to which rates are applied to determine premium," and lists payroll for workers comp and general liability, receipts or sales for general liability, and "per unit" for auto.
So the real answer to "how much" is a worksheet: your payroll split by job type, your revenue, a vehicle list with weights and radius, your loss runs, and the MSA you are trying to satisfy. Without those, any figure is a guess. We would rather walk you through the factors so you can see which ones you control.
The rating factors, policy by policy
Here is what moves the price on each of the usual oilfield policies.
| Policy | Main rating inputs | What you can influence |
|---|---|---|
| Workers compensation | Payroll in each class code, rate per $100 of payroll, experience mod, schedule rating | Correct class assignment, clean payroll records, claims and return-to-work handling, safety program |
| General liability | Payroll or revenue (the exposure base for your class), type of work, loss history | Accurate description of operations, contract and subcontractor controls |
| Commercial auto | Number of units, vehicle size class, business use, radius of operation, drivers, loss history | Driver selection, accurate radius and use, fleet safety |
| Umbrella or excess | Limits purchased, the underlying policies and their losses | Buying the limits the MSA actually requires |
| Pollution, equipment, other lines | Type of operations, values, contract requirements | Clear operations description, equipment schedules |
Workers comp: payroll, class code and the mod
Workers comp is usually the biggest single line for a service company with crews in the field, and its math is the most transparent.
The Texas Department of Insurance explains it this way: each employee's payroll goes into a Texas classification, the payroll for each class is multiplied by the insurer's rate per $100 of payroll, and the class premiums are added together. The rate itself is the loss cost NCCI files for that class, multiplied by the insurer's own loss cost multiplier, which covers expenses like commissions, taxes and profit.
Two adjustments come next:
- Experience mod. An experience rating modifier based on your past loss history may be applied. A mod under 1.00 lowers premium and a mod over 1.00 raises it. See what an experience mod is.
- Schedule rating. TDI describes schedule rating as optional: an insurer may apply a debit or credit for characteristics of your business that the rate does not reflect. Each insurer files its own maximum and minimum percentages, so the room to move differs by company. See whether a safety program lowers premiums.
Because payroll is the base, the policy is audited after it ends and the premium is adjusted to your actual payroll. Texas law also requires you, as policyholder, to disclose your operations, ownership changes and payroll to your workers comp insurer (Texas Insurance Code Section 2051.101). Getting the class code right matters as much as the rate. See how class codes work for oilfield crews.
Auto: size, use and radius
Commercial auto is rated per vehicle, and trucks are sorted into classes before any rate applies. A Texas Automobile Insurance Plan Association rate bulletin published by TDI shows the structure: trucks are grouped by size class (light, medium, heavy, and truck-tractors by weight), by business use (service, retail, commercial), and by radius (local up to 50 miles, intermediate 51 to 200 miles, long distance over 200 miles). Each combination carries its own factor.
For oilfield fleets this means a few things are worth checking at every renewal: that each unit is in the right weight class, that the radius matches where the truck actually runs, and that the driver list is current. See oilfield auto insurance and MCS-90.
The MSA sets the floor
Most of the cost questions we see start with an MSA. The operator's insurance exhibit decides which policies you have to buy, the minimum limits, and the endorsements, such as additional insured, waiver of subrogation and primary and non-contributory wording. A requirement for a high umbrella limit or a separate pollution policy changes the total far more than a small rate difference on the primary policies.
That is why we ask for the MSA before we talk price. If two operators ask for different limits, you buy to the higher one. See what limits operators commonly require and the MSA insurance requirements guide.
What to have ready for a real number
Payroll by job type for the last year and the next year, revenue, a vehicle list with weights and garaging, three to five years of loss runs, your current mod worksheet if you have one, and every MSA insurance exhibit you need to meet.
Common questions
Can you give me a ballpark for a small roustabout crew?
Not responsibly. The same headcount can produce very different premiums depending on payroll, class codes, mod, trucks, radius and the limits the MSA requires. Send us those inputs and we can price the real thing.
Why did my workers comp bill change after the policy ended?
Workers comp is priced on payroll, and the insurer audits your actual payroll after the policy period. If payroll was higher than estimated, or employees were in a different class than estimated, the final premium changes.
Does a higher limit in the MSA always mean a higher premium?
More limit generally means more premium, usually through a larger umbrella or excess layer. How much more depends on your underlying policies and loss history.
Is the cheapest quote the best one?
Only if it delivers what the MSA requires. A quote missing an endorsement the operator needs can fail prequalification and cost you work.
Sources
- Texas Department of Insurance: How workers compensation rates are computed. Payroll by classification times rate per $100; rate equals NCCI loss cost times company LCM; experience modifier; optional schedule rating with company-filed maximums and minimums.
- IRMI glossary: Exposure Base. Payroll, receipts or sales for GL and WC; per unit for auto.
- IRMI glossary: Premium Audit. Audit of the exposure basis after the policy period to determine final premium.
- Texas Automobile Insurance Plan Association, Commercial Automobile Rate Bulletin (July 1, 2012), published by TDI. Trucks classed by size, business use (service, retail, commercial) and radius (local up to 50 miles, intermediate 51 to 200, long distance over 200).
- Texas Insurance Code, Chapter 2051. Section 2051.101: policyholder must disclose operations, ownership changes and payroll to its workers comp insurer.
- NCCI: ABCs of Experience Rating. How the experience mod is applied to premium.
This page explains insurance, not law. Have your attorney review indemnity and contract language; our job is making the insurance match it.
Keep reading
Questions
What is an experience mod, and why does my operator care about it?
Questions
How do workers comp class codes work for oilfield crews?
Questions
What insurance limits do oil and gas operators require from contractors?
Contract requirements
The operator sent me an MSA. What insurance does it actually require?
Questions
Does a safety program actually lower my oilfield insurance premiums?