After being paid by a company for 6-7 months for an injury accident that wasn't my fault should I be required to pay that back

Your question is bit unclear, but I think I get the gist of your inquiry. If you were injured in a work related accident giving rise to a claim against a third party, i.e., you were rearended driving a delivery truck, then if you collect against the third party you have an obligation to reimburse for the WC benefits you have recieved. This is called "subrogation" and is set forth in Ohio Revised Code Sections 4123.93 and 4123.931. Subrogation reimbursement is generally negotiable based upon the amount of your third party recovery.