There really is no good way to force them to send you a W2. When someone does not fulfill their legal obligations, the only way to compel them to do so is though a legal action or lawsuit: you have to file a complaint (the document initiating a lawsuit) in which you seek a court order forcing them to do what they should be doing away. Only the courts can order someone to do something, and they only do so in the context of a lawsuit. Before doing that, meet with a tax preparer or, better yet, a full CPA who does taxes: tax preparers, accountants, etc. often deal with improper or incomplete paperwork and documentation, and the tax preparer or CPA may know who to file the right way even with the wrong paperwork--it's worth a conversation, before initiating a lawsuit.