Consult the resources below additional assistance on the topics of:
- Federal and Massachusetts tax and employer obligations;
- Incorporation, unemployment insurance, or workers' compensation.
| Federal Taxes and Employer Obligations |
Internal Revenue Service 
(IRS) | IRS Telephone Assistance - |
| Social Security Administration (SSA) | SSA - | |
| State Taxes | Department of Revenue (DOR): | DOR Customer Service - |
| Child Support Enforcement Reporting in Massachusetts | Department of Revenue's Child Support Enforcement (CSE) Division: | Customer Service Line - 800-332-2733 800-255-5587 (TDD/TTY) |
| Incorporation; Limited Liability Corporations (LLC); and Limited Liability Partnerships (LLP) | Office of the Secretary of the Commonwealth | Corporations Division - 617-727-9640 |
| Unemployment Insurance | Department of Unemployment Assistance (DUA) | DUA - |
| Workers' Compensation | Department of Industrial Accidents (DIA) | DIA - 617-727-4900, or 800-323-3249 |