MSO BUSINESSOWNERS POLICIES TRIGGER ENDORSEMENTS
(May 2026)
The Mutual Service
Office, Inc. (MSO) has developed a unique method for modifying its coverage
forms. The policy is built with a number of modifications, known as trigger
endorsements, embedded in the main policy form, such as BU 04 01 or BU 04 03.
These embedded modifications are triggered only when the endorsement number
associated with that modification appears on the declarations.
Changes made from the 01 19 edition to
the 05 23 edition are highlighted in bold.
|
Example:
The following wording appears at the
end of Part I E—Losses Not Insured--13. Water Damage Exclusions: “If the term BU 50 02 is listed in the Declarations,
then Exclusions 13.B. is deleted.” “If BU 50 03 is listed in the Declarations, then
Exclusion 13.B is amended in that we do cover damage caused by water
or sewage which backs up through sewers or drains or overflows from a sump,
up to the applicable limit shown in the Declarations Supplement.” ·
BU 50 02 is
entered on the declarations when backup of sewers and drains coverage is
purchased. ·
If backup of
sewers and drains coverage is purchased but is subject to a sublimit, BU 50
03 is entered on the declarations, and a sublimit is also entered. NOTE: In the 01 19 edition, the Water Damage Exclusion
was listed under exclusion 11. |
This approach avoids
confusion by keeping coverage changes within the policy, maintaining context.
No separate endorsement is required. Trigger endorsements are used selectively
and vary by policy.
The
following trigger endorsements apply:
|
Number |
Location in Policy |
Description |
|
BU 50 01 |
Part I A–Main
Property Coverages, Coverage D–Money and Securities—Expanded Coverage
Extension |
Provides Coverage D –
Money and Securities when Coverage B – Business Personal Property is not on
the policy. |
|
BU 50 02 |
Part I E – Losses Not
Insured – 13. Water Damage Exclusions |
Provides back-up
sewer, drain, and sump coverage. |
|
BU 50 03 |
Part I E – Losses Not
Insured – 13. Water Damage Exclusions |
Provides sewer, drain,
and sump backup coverage, but only up to the limit listed in the Declarations.
|
|
BU 50 04 |
Part II B –
Supplemental Coverages – 3. Employer’s Liability for Non-owned Automobile
Coverage |
Eliminates this
Supplemental Coverage. |
|
BU 50 05 |
Part II B –
Supplemental Coverages – 5. Incidental Alcoholic Beverage Coverage |
Broadens coverage
even if a charge is made for alcohol furnished / served / given, but only if
incidental and a minor part of the business operations. |
|
BU 50 06 |
Common Glossary –
Parts I and II – Part II – Products/Completed Operations Hazard |
Products / completed
operations hazard applies only when the bodily injury or property damage
occurs off the insured premises. |
|
BU 50 08 |
Part II B –
Supplemental Coverages – 7. Incidental
Fire and Explosion Liability Coverage |
Coverage extends
beyond fire and explosion to include any accidental loss occurring at a
nonowned premises rented to or occupied by the named insured. |
|
BU 50 10 |
Part I A–Main
Property Coverages, Coverage C – Loss of Income Resulting From Direct Covered
Loss |
Eliminates loss of
business income coverage. Rental income and extra expense coverage remain. |
|
BU 50 12 |
Part I B –
Supplemental Coverages – 4. Business Property Coverages |
Eliminates Consequential
Loss Coverage (Spoilage). |
The
following trigger endorsements apply:
|
Number |
Location in Policy |
Description |
|
BU 50 04 |
Part II B –
Supplemental Coverages – 3. Employer’s Liability for Non-owned Automobile
Coverage |
Eliminates this
Supplemental Coverage. |
|
BU 50 05 |
Part II B –
Supplemental Coverages – 5. Incidental Alcoholic Beverage Coverage |
Broadens coverage
even if a charge is made for alcohol furnished / served / given, but only if
incidental and a minor part of the business operations. |
|
BU 50 06 |
Common Glossary –
Parts I and II – Part II – Products/Completed Operations Hazard |
Products / completed
operations hazard applies only when the bodily injury or property damage
occurs off the insured premises. |
|
BU 50 08 |
Part II B –
Supplemental Coverages – 7. Incidental
Fire and Explosion Liability Coverage |
Coverage extends
beyond fire and explosion to include any accidental loss occurring at a
nonowned premises rented to or occupied by the named insured. |
|
BU 50 10 |
Part I A–Main
Property Coverages, Coverage C – Loss of Income Resulting From Direct Covered
Loss |
Eliminates loss of
business income coverage. Rental income and extra expense coverage remain. |
|
BU 50 12 |
Part I B –
Supplemental Coverages – 4. Business Property Coverages |
Eliminates
Consequential Loss Coverage (Spoilage). |