ATLANTA—Caterpillar plans to build a new assembly plant in Georgia, bringing an estimated 1,400 jobs to the state. The plant will be built in the Athens area.

PEORIA, IL—Caterpillar Inc. won’t choose its home state of Illinois as the site of its new $150 million assembly plant, citing the state’s “unfriendly” business climate.

CLAYTON, NC--Caterpillar plans to add 199 well-paying jobs at its plant here over the next five years. The company will invest $33 million in the plant, which manufactures earth-moving equipment. Caterpillar chose Clayton over sites in Illinois, Japan, Belgium and Brazil--all locations where it has existing manufacturing plants.