Learn the Department of Revenue's (DOR's) registration requirements when working as an outofstate contractor or subcontractor in Massachusetts. Information and resources on registering as a home improvement contractor.Includes forms, guidelines and a lot of information. This article will outline four steps for hiring international contractors overseas and how Wise can help cut costs on global payments. INSTRUCTIONS. The following Instructions, Contractor Certifications and the applicable Commonwealth Terms and Conditions are incorporated. Download our free independent contractor agreement template to hire an independent contractor in Massachusetts today. Going to hire a contractor in the USA? A Massachusetts independent contractor agreement is a document that defines a business relationship between a contractor and a client. Going to hire a contractor in the USA? Fill out front side of application printing with pen or typewriter.