Aon vs Marsh Mclennan Agency: Cargo and Transit Insurance

Businesses moving project cargo or needing excess storage may consider Aon’s listed options; Marsh McLennan Agency describes stock-throughput, inland transit, truck-cargo and ocean coverage for goods in storage or transit.

Embarcadero Risk brings together source-based comparisons for businesses moving people and goods.Research updated 2026-10-01

What Are the Key Differences Between Aon and Marsh McLennan Agency Cargo and Transit Insurance?

Named Cargo Options

Aon’s cargo page names General Cargo, Excess Storage, Stock Throughput, and Project Cargo/Marine Delay in Start-Up. Marsh McLennan Agency’s overview names stock throughput, inland transit, motor-truck cargo, and ocean marine for goods in storage or transit. A business with both truck and ocean movements can use the MMA list to ask how the placements divide, while Aon’s named project-cargo option raises a separate question about construction shipments. Neither overview specifies the policy wording or which option fits a specific route. [2] [6]

Goods at Rest and in Motion

Marsh McLennan Agency lists stock throughput, inland transit, motor-truck cargo, and ocean marine for goods in storage or transit. Aon describes cargo during loading, unloading, storage, and transit, with Excess Storage and Project Cargo/Marine Delay among its options. A business moving inventory from warehouse to customer can use these named categories to test whether one placement covers each handoff; the offerings are descriptions, not policy wording. Ask for the locations, transit legs, and selected forms to be shown together in the proposal. [6] [2]

What Should You Confirm in Aon and Marsh McLennan Agency Cargo and Transit Insurance Quotes?

  • Which MMA policy or policies would cover ocean, motor-truck, inland, and stock-throughput exposures, and what Aon form covers the same routes? [2] [6]
  • Which insurer and policy forms cover the same stock values at each warehouse and during each inland or ocean leg? [2] [6]

Coverage topics

Aon

  • role: Aon states it offers cargo insurance solutions and describes its role as cargo broker. The page does not name the carrier that would insure a particular shipment or account. Aon’s official global product/capability page. The statement is limited to Aon’s marketing of brokerage or advisory services, not policy issuance.company-reportedSource ↗
  • eligibility: Aon addresses businesses across industries that move raw materials, components, finished goods and appliances by road, rail, sea or air, domestically and internationally. Audience stated by Aon on its global capability page; this does not establish a specific applicant’s eligibility or placement availability by U.S. state.company-reportedSource ↗
  • coverage: Aon describes cargo insurance for physical loss or damage to goods during transportation and describes goods as protected during loading, unloading, storage and transit. Its listed options include General Cargo, Excess Storage, Stock Throughput and Project Cargo/Marine Delay in Start-Up. These are Aon’s product descriptions, not a guarantee that a buyer’s policy includes every category or peril. Aon’s broker-authored explanation of the insurance line. It does not establish an individual insured’s policy entitlement; the insurer’s form, endorsements and declarations control.company-reportedSource ↗
  • services: Aon describes cargo broking, risk consulting, claims management and a global network coordinating local expertise. These are brokerage and advisory services, not the insurer’s claim decision or a guarantee of recovery. Company-reported brokerage and advisory services. Account-specific service terms are not stated.company-reportedSource ↗
  • insurer: The reviewed page does not identify the insurer or the legal producing entity for a specific placement. Ask Aon to identify both for the quoted risk. Aon’s global product/capability page reviewed 2026-09-30; no buyer quote, binder or policy was reviewed. This does not establish that no insurer or producing entity is available.not-foundSource ↗
  • limits: The reviewed page does not state a standard buyer-specific limit, retention or deductible for this placement. Confirm amounts, sublimits and conditions in the quote and issued policy. Aon’s global product/capability page reviewed 2026-09-30; no buyer quote or policy form was reviewed.not-disclosedSource ↗

Marsh McLennan Agency

  • role: Marsh McLennan Agency describes arranging cargo transit for the audience stated on the cited product page. cargo transit marketed by marsh-mclennan-agency; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement.company-reportedSource ↗
  • eligibility: Businesses storing or transporting goods; source discusses domestic and international supply chains. cargo transit marketed by marsh-mclennan-agency; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement.company-reportedSource ↗
  • coverage: The cited product page describes cargo stock-throughput, inland transit, motor-truck cargo, and ocean marine options for goods in storage or transit. Marketing description only; actual coverage, exclusions, conditions, limits, and availability depend on the issued policy and jurisdiction. cargo transit marketed by marsh-mclennan-agency; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement.company-reportedSource ↗
  • application: The page invites organizations to contact a Marsh McLennan Agency adviser or specialist to discuss placement. The page does not establish a quote, bind, or coverage-effective timeline. cargo transit marketed by marsh-mclennan-agency; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement.company-reportedSource ↗
  • limits: The cited overview does not set a universal limit or retention for this line. Ask for the proposed policy form, limits, retentions, exclusions, and conditions in the quote. Only the cited marketing page was reviewed for published limit and retention information; no policy-form entitlement is inferred.not-disclosedSource ↗

Aon lists General Cargo, Excess Storage, Stock Throughput, and Project Cargo/Marine Delay in Start-Up. Marsh McLennan Agency describes cargo stock-throughput, inland transit, motor-truck cargo, and ocean marine options.

Source material

  1. 01
    Motor Truck Cargo Legal Liability Coverage

    American Association of Insurance Services, Inc.; hosted by National Unity · Coverage and Property Covered pp.1–2; Perils Excluded pp.6–7; Valuation p.8; How Much We Pay p.9; Transit definition p.13 · accessed 2026-09-16

  2. 02
    Cargo Insurance

    Aon · Cargo insurance definition and transport scope, coverage examples including loading, unloading and storage, lines 123–175; broking, risk consulting, claims management and global cargo network services in ‘How Aon Can Help’; talk-to-team link at top. · accessed 2026-09-30

  3. 03
    Commercial Insurance Guide

    California Department of Insurance · Commercial Property; Inland Marine; What Should I Expect from a Broker-Agent · accessed 2026-09-16

  4. 04
    Shipping Options

    International Trade Administration, U.S. Department of Commerce · Export Shipping Basics; Tips on International Shipping from U.S.; Working with Freight Forwarders · accessed 2026-09-16

  5. 05
    Special Documents

    International Trade Administration, U.S. Department of Commerce · Insurance Certificate bullet · accessed 2026-09-16

  6. 06
    Cargo Insurance | MMA

    Marsh McLennan Agency · Cargo insurance coverage; cargo stock throughput, inland transit, motor truck cargo, and ocean marine sections. · accessed 2026-09-30

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