One essential form for overseas contractors is Form W-8BEN. In this guide, we'll walk you through everything you need to know about bringing a selfemployed worker on board, wherever they are in the world.Going to hire a contractor in the USA? You'll need to solicit applicants, review their applications, and make an offer with an independent contractor agreement. Create an international contractor agreement that defines the fees, payment terms, and scope of work. Onboard the contractor and begin work. 1. Learn how to determine whether a person providing a service to you is an employee or an independent contractor. Independent contractors can be hired through the procurement processes of UCSF's Supply Chain Management (SCM), Global Program, or through PEOs. Step 5: Have foreign contractors complete IRS Form W8BEN. Contract management.