Hiring international contractors can be useful but comes with challenges like IRS requirements or foreign labor laws. This article will outline four steps for hiring international contractors overseas and how Wise can help cut costs on global payments.While there are fewer responsibilities when hiring contractors, you still need to comply with local laws, taxes and IRS filing requirements. Learn the Department of Revenue's (DOR's) registration requirements when working as an outofstate contractor or subcontractor in Massachusetts. Here's an overview of how to retain or when hiring out of state employees in Massachusetts and how SixFifty makes it fast and affordable. The W8 BEN is essentially the W9 for international workers. State law requires a Foreign Corporation to file a certificate of registration as an organization with the Secretary of State within 10 days. A foreign corporation must file a certificate of registration within 10 days after it starts to transact business in the commonwealth. • Revised IC Questionnaire reflects Massachusetts law and is easier to complete and analyze. Do foreign contractors have to pay taxes?