Mass. Gen. Laws ch. 176D, § 3
The following are hereby defined as unfair methods of competition and unfair or deceptive acts or practices in the business of insurance:—
(1) Misrepresentations and false advertising of insurance policies: making, issuing, circulating, or causing to be made, issued or circulated, any estimate, illustration, circular or statement which:—
(4) Boycott, coercion and intimidation:
(5) False statements and entries:
(7) Unfair discrimination:
(8) Rebates: Except as otherwise expressly provided by law, knowingly permitting or offering to make or making any insurance contract, including but not limited to a contract for life insurance, life annuity or accident and health insurance, or agreement as to such contract other than as plainly expressed in the insurance contract issued thereon, or paying or allowing, or giving or offering to pay, allow, or give, directly or indirectly, as inducement to such insurance or annuity any rebate of premiums payable on the contract, or any special favor or advantage in the dividends or other benefits thereon, or any valuable consideration or inducement whatever not specified in the contract; or giving, or selling, or purchasing or offering to give, sell, or purchase as inducement to such insurance contract, or annuity or in connection therewith, any stocks, bonds, or other securities of any insurance company or other corporation, association, or partnership, or any dividends or profits accrued thereon, or anything of value whatsoever not specified in the contract.
Nothing in clauses (7) or (8) of this subsection shall be construed as including within the definition of discrimination or rebates any of the following practices:—(i) in the case of any contract of life insurance or life annuity, paying bonuses to policyholders or otherwise abating their premiums in whole or in part out of surplus accumulated from nonparticipating insurance, provided that any such bonuses or abatement of premiums shall be fair and equitable to policyholders and for the best interests of the company and its policyholders; (ii) in the case of life insurance policies issued on the industrial debit plan, making allowance to policyholders who have continuously for a specified period made premium payment directly to an office of the insurer in the amount which fairly represents the saving in collection expenses; (iii) readjustment of the rate of premium for a group insurance policy based on the loss or expense experienced thereunder, at the end of the first or any subsequent policy year of insurance thereunder, which may be made retroactive only for such policy year.
(9) Unfair claim settlement practices: An unfair claim settlement practice shall consist of any of the following acts or omissions: