A Waiver of Subrogation (WOS) is a contract requirement, usually added by endorsement, in which your insurer gives up its right to recover from a third party such as a general contractor or property owner after a covered loss. A COI note or checkbox alone often will not satisfy strict vendor portals or bid packets, because many require the endorsement wording on the policy. It most often applies to general liability and workers' comp, and is frequently bundled with Additional Insured and Primary and Noncontributory. We help California and Texas contractors match COIs and endorsements to the exact contract language. As ContractorsInsured.net (CA Lic #6015321 / TX Lic #3305690), we check your policy and COI against the waiver of subrogation wording before you submit.
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What Waiver of Subrogation means in plain English
WOS is about whether an insurer can pursue recovery against certain parties after paying a claim. A waiver request typically asks the insurer not to pursue that recovery in specific situations, subject to policy terms.
In a construction contract, a waiver of subrogation requirement is usually an attempt to reduce post-loss finger-pointing between the parties on the job. It commonly shows up alongside other compliance requirements, such as an Additional Insured endorsement and primary and noncontributory wording, and it is confirmed on your certificate of insurance (COI). A waiver is most often requested against your general liability insurance for contractors and your workers' compensation policy.
Mini definitions (quick and extractable)
- COI (Certificate of Insurance): Proof of coverage and limits on a date. It does not rewrite the policy.
- Additional Insured (AI): A status usually granted by endorsement, not created by a COI checkbox.
- Primary and Noncontributory (PNC): A requirement about which policy responds first, often supported by endorsement wording.
- Waiver of Subrogation (WOS): A requirement that may waive certain recovery rights when endorsed and permitted.
Important: This is general information, not legal advice. Requirements vary by contract, project, and carrier.
Why GCs, owners, and property managers require WOS
WOS is part of contract risk transfer. The hiring party wants fewer disputes between parties after a loss, and wants the insurance program to align with the contract structure. You commonly see WOS requests in:
- Vendor onboarding portals
- Subcontract agreements with GCs
- Owner contracts for commercial work
- Property manager requirements for tenant improvements and ongoing maintenance
Trades that run into WOS requests constantly:
Need this for onboarding or a bid deadline (fast lane)
- Existing client: Submit your COI request and paste the contract requirement language. WOS wording matters. Request a COI.
- New to us: Start with coverage placement first.
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Do not have the policy the GC is asking about? We quote general liability the same business day, bind, and issue the COI with the waiver of subrogation wording right after. Already covered? Send the certificate holder details and endorsement wording and we match it.
Where it shows up (COI vs endorsement) and what to verify
Step 1: Confirm what the contract is asking for
Ask:
- Who is the waiver for? GC, owner, property manager, landlord, and so on.
- Which policy line? Often general liability and workers' comp; sometimes auto, depending on contract wording.
- Is it tied to a written contract requirement? Many policies require a written contract in place for the waiver to apply.
Step 2: Verify the COI basics (common rejection points)
- Insured legal name matches your contract and vendor portal.
- Certificate holder legal name and address are exact.
- Job name and jobsite address included if required.
- Limits and policy dates match the requirement page.
Step 3: Verify the endorsement (the part portals care about)
A COI note that says "WOS applies" may not pass strict portals if they expect endorsement support. What to verify:
- The policy includes WOS wording or an endorsement that supports it.
- The waiver is granted for the right party, by scheduled name, blanket wording, or contract-based wording, depending on the form.
- If the contract bundles requirements, confirm AI plus PNC plus WOS are each handled, not assumed.
Related guides: COI, Additional Insured, and Primary and Noncontributory.
Waiver of subrogation on workers' comp vs general liability
Most contracts do not ask for a single waiver. They ask for a waiver of subrogation on your general liability and on your workers' compensation, and those are separate endorsements on separate policies that do different jobs.
The general liability waiver
Your general liability insurer gives up its right to recover from the general contractor or owner after it pays a third-party claim tied to your work. This is the waiver most people picture when they hear the term.
The workers' comp waiver (the one most often missed)
Your workers' compensation insurer gives up its right to recover from the general contractor or owner after it pays a claim to one of your own injured employees. In construction this matters: without it, a subcontractor's comp insurer that pays an injured worker can turn around and pursue the general contractor to get its money back. A workers' comp waiver of subrogation endorsement blocks that. A few states regulate these endorsements, requiring them to be filed or adding a small premium, and some restrict them, so confirm your state and carrier allow the waiver before you promise it.
Blanket vs scheduled waivers
A scheduled waiver names the specific party on a specific job. A blanket waiver covers any party you have agreed, in a written contract signed before the loss, to waive against. Blanket waivers are common in construction because you do not have to endorse the policy for every new job; the written contract triggers the waiver. Some contracts and vendor portals specifically require one or the other, so match what the contract asks for.
- Confirm the waiver is endorsed on both general liability and workers' comp if the contract requires both.
- Check whether the contract wants a blanket or a scheduled waiver.
- Make sure a written contract is in place, since many waivers only apply when one is.
- Verify your state and carrier permit the workers' comp waiver before committing to it on a bid.
Comparing the three endorsements? General contractors usually ask for additional insured, primary and noncontributory, and waiver of subrogation together, and they are separate endorsements with separate forms. Our full guide to how additional insured, primary and noncontributory, and waiver of subrogation differ covers which ISO form applies to each and what to send your broker.
How much does a waiver of subrogation cost?
On general liability
The carrier Hiscox puts the typical increase at 2% to 10% of your base premium, and gives a worked example: on a general liability policy costing $1,200 a year, adding a blanket waiver might add $50 to $120 a year. Hiscox also notes that one-time, project-specific waivers on general liability usually cost less than blanket waivers that apply to every client. Source: Hiscox, “What is a Waiver of Subrogation?”, updated March 2026.
On workers’ compensation
Workers’ comp is different, and it is state-regulated rather than set freely by the carrier. In Texas it is not an informal add-on at all. The Texas Department of Insurance’s Texas Workers’ Compensation and Employers’ Liability Manual (Rule III, Policy Preparation) sets out the premium build-up, and “premium charge for waiver of subrogation, if applicable” is step 5, after the classification premiums and before the experience modifier is applied at step 9. Source: Texas Department of Insurance rules exhibit (2013 edition).
The practical consequence is easy to miss. Because the waiver charge goes in before the modifier, it is itself multiplied by your experience modifier. A contractor with a mod above 1.0 pays proportionally more for the same waiver than a contractor with a cleaner loss history.
The part that surprises people
On general liability, a project-specific waiver is usually the cheaper option. On workers’ compensation it is commonly the other way round, because a blanket waiver is rated across your whole payroll base while a specific waiver is rated against the payroll tied to one job. Do not assume “blanket” means “expensive.” Ask which basis your carrier files.
Common mistakes that delay approval (and how to avoid them)
Not sending the contract requirement language
Fix: Paste the WOS requirement clause or upload the insurance requirements page.
Wrong entity name for the party requesting WOS
Fix: Use the legal entity name from the contract or portal.
Assuming the COI checkbox is enough
Fix: If the portal expects endorsement confirmation, request it explicitly.
Not specifying which policies the contract references
Fix: Tell us what the contract requires (GL, WC, Auto, Umbrella). Do not guess.
Missing project details when the portal requires them
Fix: Include job name and jobsite address.
Waiting until the day before mobilization
Fix: If you have a hard deadline, submit early and include the requirement language.
How to request WOS correctly (copy/paste checklist)
Speed comes from complete inputs. If we have the party details and exact contract wording, we can align COI and endorsements to what the GC or portal validates. Provide:
- Certificate holder: legal name and mailing address.
- Who needs WOS wording: GC, owner, or property manager legal names.
- Project: job name and jobsite address.
- Required limits: GL limits, and Umbrella if required.
- Exact requirement language: paste the contract clause or upload the requirement page.
- Other requirements: Additional Insured, Primary and Noncontributory, any special wording.
- Send-to emails: who needs the COI and any CC list.
- Deadline: bid due date or portal deadline.
Existing clients: Request a COI. New to us: Get a Quote.
How we help you meet requirements fast
We translate contract insurance requirements into the documents and wording that GCs and vendor portals actually validate, without guessing or overpromising. What you can expect:
- Clear routing for existing client COI requests vs new coverage quoting.
- Compliance-first handling based on your actual requirement page.
- Trade-aware support for roofing, GC, and plumbing workflows.
- Independent broker approach with access to multiple carriers.
- Clear guardrails: requirements vary by contract, project, and carrier, and this is not legal advice.