Massachusetts Workers' Comp Insurance for Plumbing Contractors

Massachusetts requires workers' compensation coverage no matter how many employees a business has or how many hours they work; there is no minimum headcount exemption for most employers. A specific carve-out applies to domestic workers, who must work at least 16 hours a week before coverage is required for them. See Mass.gov's workers' compensation insurance requirements page.

Common codes for this work include 5183 Plumbing Contractor; 5606 Construction Executive / Supervisor; 7380 Commercial Drivers & Messengers. Massachusetts maintains its own classification system (WCRIBMA) rather than NCCI codes. The codes below are NCCI reference codes; your Massachusetts classification may carry a different number, and we match it during quoting.

LLC members, LLP partners, and sole proprietors are not required to carry coverage on themselves, though this exemption never extends to any employees they hire, who must still be covered. Corporate officers who own at least 25% of the corporation can request an exemption for themselves using the state's affidavit of exemption, but again, this doesn't exempt the corporation's actual employees. Because the exemption thresholds differ by entity type (a flat exclusion for LLC members/partners/sole proprietors versus a 25%-ownership test for corporate officers), it's worth confirming which rule fits a given ownership structure before assuming exemption applies.

An employer without required coverage can be issued a stop-work order that halts all business operations; paying $100 per day of noncompliance can avoid the order taking effect initially, but that daily penalty rises to $250 per day once the violation is confirmed after a hearing. Separately, failing to provide required coverage is a criminal offense carrying a fine of up to $1,500, up to one year of imprisonment, or both, with a corporation's president or treasurer personally liable; a repeat violation after notice is treated as an additional offense with its own fines and imprisonment. Noncompliant employers can also lose business licenses and permits, face a three-year debarment from state and municipal contracts, and have liens placed against their property for unpaid penalties (M.G.L. c. 152, § 25C).

Price is driven by payroll in each class code, the Massachusetts rates filed for those codes, your claims history (experience modification), and underwriting factors such as split between new-construction rough-in work and service/repair calls; supervisory payroll versus hands-on installation and repair crew; whether crews perform trenching or excavation work directly. We compare carriers so you can see what you qualify for.

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No — both fall under the same plumbing classification, which covers the shop, yard, and field operations of a plumbing contractor together regardless of whether the work is new-construction rough-in or a service call.

It doesn't create a separate classification, but carriers do ask about trenching and excavation practices directly, since cave-in exposure is a well-documented risk on sitework and repair digs.

No. This coverage is written for contractors with W-2 employees on payroll; owner-only certificate ('ghost') policies are not offered.

Yes. Massachusetts requires coverage regardless of employee count or hours worked, with the only hours-based exception applying to domestic workers.

No. LLC members, LLP partners, and sole proprietors are exempt from coverage on themselves, though any employees they hire must still be covered.