 The new center will help MercyOne to increase the number of behavioral health-care services it can offer to those in the community it serves who are struggling with mental illness and substance abuse issues.MercyOne to open $10.6 million behavioral center

Other major employers include door manufacturer Curries/Graham Company, Woodhardbor Cabinetry Manufacturers, Principal Financial, Cargill Kitchen Solutions and the Kraft Foods plant that produces the nation's entire supply of refrigerated ready-to-eat Jell-O pudding snacks.Mason City is also a major production center for Portland Cement.