Ian Williamson represents clients in a broad array of commercial disputes, and has substantial experience litigating disputes among owners of closely held businesses. In addition to his litigation practice, Mr. Williamson assists clients with various business formation and maintenance issues. He is also experienced in drafting complex contracts, including shareholder and operating agreements, commercial leases, and contracts for the purchase or sale of business assets or ownership interests.

Mr. Williamson advises a wide range of entities and individuals. Some representative clients include an insolvent HMO's creditors' committee; several restaurants and restaurant chains; a charter school consulting company; a non-profit educational service provider; a personnel services company; employers and employees involved in non-compete and trade secrets disputes; and majority and minority ownership interests in a variety of industries.

In 2005, Mr. Williamson and Mr. Mantese published an article in the Michigan Bar Journal entitled Minority Shareholder Oppression: From Estes to Franchino. Recently, the two teamed up with Mr. Rossman to revisit Michigan's statute governing shareholder lawsuits, and published a follow-up article entitled Shareholder and Corporate Oppression Actions: Fixing Liability Against Those In Control of Closely Held Corporations.

Mr. Williamson's efforts have helped MHRW's clients to win numerous verdicts and settlements in excess of $1 million, including the second highest breach of contract settlement reported by Michigan Lawyers Weekly in 2009. Mr. Williamson also maintains an appellate practice, and regularly briefs and argues appeals to state and federal appellate courts. Some representative appellate victories include Gearin v Rogers, Van Eman v C.A.R.S. Protection Plus, and Sterling Bank & Trust v Canvasser. Mr. Williamson’s most recent published appellate victory is the Michigan Court of Appeals decision in Hastings Mutual Ins Co v Safety King, Inc.

Mr. Williamson has served as an adjunct professor at Lawrence Technological University, where he taught introductory business management. He was recognized as a "Rising Star" by Super Lawyers magazine for the years 2010 and 2011.