 Wal @-@ Mart is the largest private sector employer in Ohio with approximately 49 @,@ 700 employees as of April 2014 . The largest Ohio employer with headquarters in Ohio is the Cleveland Clinic , with approximately 41 @,@ 400 employees and headquarters in Cleveland . The largest employer at a single location in Ohio is Wright Patterson Air Force Base in Dayton . 70 % of the nation 's electrometallurgical ferroalloy manufacturing employees are located in Ohio . 
