Ohio Code § 4123.522

§ 4123.522.

The employee, employer, and their respective representatives are entitled to written

notice of any hearing, determination, order, award, or decision under this chapter

and the administrator of workers' compensation and his representative are entitled

to like notice for orders issued under divisions (C) and (D) of section 4123.511 and section 4123.512 of the Revised Code .  An employee, employer, or the administrator is deemed not to have received notice

until the notice is received from the industrial commission or its district or staff

hearing officers, the administrator, or the bureau of workers' compensation by both

the employee and his representative of record, both the employer and his representative

of record, and by both the administrator and his representative. If any person to whom a notice is mailed fails to receive the notice and the commission,

upon hearing, determines that the failure was due to cause beyond the control and

without the fault or neglect of such person or his representative and that such person

or his representative did not have actual knowledge of the import of the information

contained in the notice, such person may take the action afforded to such person within

twenty-one days after the receipt of the notice of such determination of the commission.  Delivery of the notice to the address of the person or his representative is prima-facie

evidence of receipt of the notice by the person.