Caterpillar has a 1.5-million-square-foot logistics center in Clayton just off Interstate 70, where about 600 people work.
Oberhelman, 63, will step down as CEO at the end of the year and leave the chairman position at the end of March. He has been CEO since 2010 and has been with the company for more than 41 years.
Dave Calhoun will become non-executive chairman after Oberhelman retires on March 31. Calhoun is an executive of private equity firm The Blackstone Group LP.
Caterpillar has been dealing with falling sales because its customers have been hurt by falling oil prices and slower economic growth around the world, causing them to buy less equipment from Caterpillar.
Shares of Caterpillar Inc. slipped 28 cents to $87.39 in morning trading Monday. Its shares are up about 25 percent in the last 12 months.
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