Mass. Gen. Laws ch. 112 § 246
Whoever, not being licensed to practice sheet metal work pursuant to this chapter, practices or attempts to practice sheet metal work or holds himself out as being licensed to practice sheet metal work or uses any of the licensed titles of that profession, or whoever practices sheet metal work under a false or assumed name or under a name other than that by which he is licensed or whoever impersonates another practitioner of sheet metal work, or whoever buys, sells or fraudulently obtains a diploma, license, license renewal certificate or record or registration to practice sheet metal work or aids or abets in such selling or fraudulent obtaining or whoever practices sheet metal work under cover of any diploma, license, license renewal certificate, record or registration to practice sheet metal work shall be punished by a fine of not less than $100 nor more than $1,000. A city or town that fails to comply with any of its provisions shall forfeit $50 to the commonwealth for each month during which such neglect continues. Nothing in this section shall affect, restrict, diminish or limit any other penalty or remedy provided by law, including those penalties provided under sections 61 to 65E of chapter 112.
Mass. Gen. Laws ch. 112, § 246