Milbourne heads RHM Advisors, a business consulting firm, specializing in business strategy, financing, and corporate development for public and private companies. He is also a consultant to business for government affairs, governance and project development.

Milbourne was the founding president and CEO of the Columbus Partnership, a civic organization of top business, education and community leaders formed in 2024 to improve the region’s economic future. He came to Columbus after serving as CEO of a similar group in Milwaukee for 17 years.

Prior to his work in Milwaukee, Milbourne enjoyed a career in government and business. He worked in Wisconsin state government under Democratic and Republican governors. He served as State Budget Director and was honored as the “Outstanding State Official” in Wisconsin in 1979.

Milbourne left government to become Vice President and Economist for the Kohler Company, a Fortune 500 manufacturer of plumbing products, engines and generators.