Mass. Gen. Laws ch. 260 § 5A
Actions arising on account of violations of any law intended for the protection of consumers, including but not limited to the following: chapter seventy-five C; chapter seventy-five D; section seven N of chapter ninety; sections twenty-one, twenty-one D, twenty-eight, forty-eight, forty-nine, sixty-nine, and seventy of chapter ninety-three; chapter ninety-three A; sections forty-six A to forty-six R, inclusive, and sections ninety-six to one hundred and fourteen B, inclusive, of chapter one hundred and forty; chapter one hundred and forty D; section one hundred and twenty-seven A of chapter one hundred and sixty-four; chapter one hundred and seventy-six D; sections fourteen, fifteen B, fifteen C, and eighteen of chapter one hundred and eighty-six; sections thirteen I, thirteen J, and thirteen K of chapter two hundred and fifty-five; chapter two hundred and fifty-five B; chapter two hundred and fifty-five C; and chapter two hundred and fifty-five D; whether for damages, penalties or other relief and brought by any person, including the attorney general shall be commenced only within four years next after the cause of action accrues.
Mass. Gen. Laws ch. 260, § 5A