Insurance Glossary

Insurance Glossary
Plain-English definitions for common contractor insurance terms.
Additional Insured
Plain-English meaning: Another party, usually customer/contractor/owner, is added to receive certain protection under your policy.
Why TDC cares: Common requirement before entering jobsites.
Typical action: Ask broker to add certificate holder as additional insured where available.
Waiver of Subrogation
Plain-English meaning: Your insurer agrees not to seek recovery from the customer/contractor after paying a covered claim.
Why TDC cares: Contractors want to prevent your insurer from coming back against them.
Typical action: Confirm policy endorsement and cost with broker.
Primary and Non-Contributory
Plain-English meaning: Your policy responds first and does not require the customer's insurance to contribute first.
Why TDC cares: Large contractors use this to keep claims off their own insurance where possible.
Typical action: Broker must confirm endorsement wording.
Occurrence Limit
Plain-English meaning: Maximum paid for one claim/event.
Why TDC cares: Contractors compare this to their required per-occurrence limit.
Typical action: Check exact amount on COI.
Aggregate Limit
Plain-English meaning: Maximum paid during the policy period for covered claims.
Why TDC cares: A $1M occurrence policy may have a $2M aggregate cap.
Typical action: Monitor aggregate erosion after claims.
Combined Single Limit (CSL)
Plain-English meaning: One auto liability limit shared for bodily injury and property damage.
Why TDC cares: Common auto policy limit format.
Typical action: Usually shown as $1M CSL or $2M CSL.
Deductible
Plain-English meaning: Amount TDC pays before insurance responds.
Why TDC cares: Affects cash exposure after a claim.
Typical action: Track by policy, especially equipment and cyber.
Self-Insured Retention (SIR)
Plain-English meaning: Amount TDC must pay/handle before insurer has duty to pay, often more serious than deductible.
Why TDC cares: Can create administrative and cash-flow burden.
Typical action: Avoid surprises on E&O/cyber/umbrella policies.
Contractual Liability
Plain-English meaning: Coverage for certain liabilities assumed in a contract.
Why TDC cares: Construction contracts often include broad indemnity clauses.
Typical action: Do not assume every indemnity obligation is insured.
Completed Operations
Plain-English meaning: Coverage for liability arising after work is completed.
Why TDC cares: Relevant when deliverables or completed site work are later challenged.
Typical action: Confirm CGL includes completed operations.
Professional Liability / E&O
Plain-English meaning: Coverage for financial loss caused by alleged professional mistakes.
Why TDC cares: Relevant for mapping, measurements, volumes, reports, processing, and advice.
Typical action: Consider quote; avoid using licensed survey language publicly.
Inland Marine
Plain-English meaning: Property coverage for equipment that moves around.
Why TDC cares: Drones, payloads, sensors, cameras, and laptops are mobile assets.
Typical action: Maintain current equipment schedule.
Certificate Holder
Plain-English meaning: Entity named on the COI to receive proof of insurance.
Why TDC cares: Does not automatically make them additional insured.
Typical action: Use exact legal name/address from customer.
Endorsement
Plain-English meaning: Policy amendment that changes coverage or adds required wording.
Why TDC cares: COIs sometimes reference endorsements; actual policy controls.
Typical action: Ask broker for endorsement confirmation if needed.
Umbrella / Excess
Plain-English meaning: Extra limit above underlying policies.
Why TDC cares: Often requested in large contracts; not always necessary for small work.
Typical action: Track frequency of requests and ROI.