Subcontractor COI Collection Playbook (Prime Contractors)

1. 1

   Establish a single source-of-truth COI tracker

   Don't track COIs in folders, Outlook, or hope. Use one tracking system that captures:

   • Subcontractor name + EIN
   • COI carrier name + agent contact
   • Effective date + expiration date
   • Policy types covered (GL / WC / Auto / Excess)
   • Limits per policy type
   • Additional Insured endorsement (form number, e.g., CG 20 10 / CG 20 37)
   • Waiver of Subrogation flag
   • Primary & Noncontributory endorsement flag
   • Project/contract reference
   • Approval status

   Tools: NetCertify, Jonas Software, Smartsheet template, or a spreadsheet with conditional-format alerts on expiration dates. The key is "single source of truth."

   💡 Tip: If your business has 10+ active subs at once, the spreadsheet approach breaks. Invest in a purpose-built tool. The hours saved + risk reduction pays for the subscription many times over.
2. 2

   Define your contract minimums upfront

   Before the first subcontract is signed, lock down what insurance you require from every sub. Standardize:

   • Required policy types (GL minimum is universal; WC if subs have employees; Auto if subs drive to site; Excess for large projects)
   • Minimum limits ($1M/$2M GL is a common baseline; $1M Auto; full state-stat WC; $1M-$5M Excess based on project value)
   • Required endorsements:
     • Additional Insured (your prime entity + project owner, both ongoing AND completed operations: CG 20 10 + CG 20 37)
     • Waiver of Subrogation
     • Primary & Noncontributory
   • 30-day notice of cancellation/material change to your office

   Codify these in a one-pager attached to every subcontract. Don't negotiate down by project — establish baseline and exceptions get escalated to your insurance broker for review.

3. 3

   Collect COI BEFORE work begins (don't allow start-without-COI)

   The single highest-leverage rule: no work begins without COI in hand. Enforce by:

   • Adding to subcontract: "Work shall not commence until current and complete COI is delivered to Prime."
   • Project-manager checklist before authorizing mobilization
   • Payment hold on Sub's first invoice until COI verified

   This single rule prevents 80% of COI-related claim denials. The sub's incentive to deliver the COI is the same incentive they have to start the project; align them.

   💡 Tip: If a sub claims they can't get the COI for 1-2 weeks, that's a flag — most agents issue COIs within 24-48 hours. Either the sub doesn't have the policy or has bad agent relationship. Both worth knowing before mobilization.
4. 4

   Verify the COI is real and accurate (not just present)

   A COI is informational only; it does NOT bind the carrier. Subs can present forged or altered COIs. Verify:

   • Carrier name + NAIC code — look up the carrier on naic.org to confirm it's licensed
   • Agent name + agency — phone the agency directly to verify the policy is active (don't email — fraud rings spoof email)
   • Additional Insured endorsement — ask for the actual endorsement form (CG 20 10, CG 20 37, etc.) attached to the policy, NOT just the COI listing
   • Limits match contract — re-read your subcontract and confirm

   For high-dollar projects (over $500K), have your insurance broker validate every COI before mobilization. The cost is minimal; the gap-claim risk is large.

   💡 Tip: Pro tip: ask for a sample policy declarations page in addition to the COI. Decs show actual coverage; COI summaries can mislead.
5. 5

   Set up expiration alerts BEFORE renewals lapse

   COI tracker should fire alerts at:

   • 60 days before expiration: notification to project manager
   • 30 days before expiration: escalation to sub + reminder email
   • 14 days before expiration: hold sub's next invoice until renewal COI delivered
   • Day-of expiration: STOP work on that sub's portion if no renewal

   Most COI software automates this. Manual tracking falls behind quickly when 30+ subs are managed simultaneously.

6. 6

   Annual audit + lien protection review

   Annually (or per major project completion):

   • Reconcile your COI tracker against your subcontractor invoice register — any subs paid but no current COI on file is a flag
   • Pull state lien databases to confirm no subs filed mechanics liens against your project
   • If a sub filed a lien, verify your Payment Bond (if applicable) responded
   • Review your own GL loss runs for any claims that should have been the sub's responsibility

   Pattern of sub-caused claims hitting your policy = systemic process failure. Address before next renewal — your premium reflects accumulated loss history.

7. 7

   Document everything for audit + dispute defense

   Save indefinitely (or per statute of limitations, typically 6+ years post-project):

   • Original signed subcontracts with insurance requirements
   • Every COI received from each sub
   • Email/phone records of carrier verification calls
   • Renewal COIs for every policy period
   • Any cancellation or material-change notices received
   • Loss runs from carriers showing sub-caused claims (or lack thereof)

   In disputes (whether between prime + sub, prime + owner, or insurance claims), this documentation is your audit trail. Without it, you're defending claims on memory.