You must sign an unconditional lien waiver in Michigan only if you have received your payment and you have verified that it is ready for your disposal. Here is a list of all of the Do-It-Yourself forms on Michigan Legal Help.This guide will explain the basics of one specific type of Michigan lien waiver: the Partial Conditional Waiver of Lien. Summary of Michigan Lien Waiver requirements and laws for Michigan construction projects including free forms, FAQs, resources and more. (1) A person shall not require, as part of any contract for an improvement, that the right to a construction lien be waived in advance of work performed. A partition action enables you to force the sale of property when coowners are refusing to sell. This Michigan lien waiver guide includes everything you need to know, including downloadable forms, to get the lien waiver exchange right. Part I Construction Liens. A contractor, subcontractor, supplier, or laborer who provides an improvement to real property may acquire a construction lien. Pursuant to Land Division Act.