Knapp, Ohl & Green represents many clients in state and federal courts as well as workers compensation and industrial commissions in Illinois, Missouri and throughout the Midwest, including trucking companies and members of the transportation industry, manufacturers and distributors of products, employers, owners of commercial and retail premises, members of the petroleum industry, banking and financial institutions, insurance companies and risk management third party administrators, construction companies and general contractors, school districts, park districts, housing authorities and other municipalities, and a variety of other members of the American business community.