Regulated by the Division of Insurance (DOI), SIGs may include:
- Public employers
- Non-profit groups, and
- Private employers in the same industry or trade association
| Self-Insurance Groups as of 4/16/2026 |
|---|
| (Associated Builders & Contractors) ABC Massachusetts Workers' Compensation Self Insurance Group, Inc. |
| Automotive Industries Compensation Corporation |
| Independent Schools Compensation Corporation |
| Massachusetts Bay Self-Insurance Group, Inc. |
| Massachusetts Care Self-Insurance Group, Inc. |
| Massachusetts Catholic Self-Insurance Group, Inc. YE 3/31 |
| Massachusetts Education & Government Association Property & Casualty Group YE 6/30 |
| Massachusetts Healthcare Self-Insurance Group, Inc. |
| Massachusetts Interlocal Insurance Association (MIIA) Property & Casualty Group, Inc YE 6/30 |
| Massachusetts Manufacturing Self-Insurance Group, Inc. |
| Massachusetts McDonald's Operators' Workers' Compensation Group, Inc. |
| MassNAHRO (National Association of Housing & Redevelopment Officials) Insurance Group, Inc. |
| Massachusetts Retail Merchants Workers' Compensation Group, Inc. |
| Massachusetts Trade Self-Insurance Group, Inc. |
| (New England Educators Insurance Association) NEEIA Compensation Inc. |
| (School Transportation Association of Massachusetts) STAM Workers' Compensation Self Insurance Group, Inc. |
| Self-Insured Lumber Businesses Association, Inc. |
| Commonwealth Manufacturers Compensation Corporation runoff 1/1/97 |
| Wholesale/Retail Suppliers Compensation Corporation runoff 1/1/10 |