(A) Public employers shall extend to an exclusive representative designated under section 4117.05 of the Revised Code, the right to represent exclusively the employees in the appropriate bargaining unit and the right to unchallenged and exclusive representation for a period of not less than twelve months following the date of certification and thereafter, if the public employer and the employee organization enter into an agreement, for a period of not more than three years from the date of signing the agreement. For the purposes of this section, extensions of agreements shall not be construed to affect the expiration date of the original agreement.

(B) A public employer shall bargain collectively with an exclusive representative designated under section 4117.05 of the Revised Code for purposes of Chapter 4117 of the Revised Code.

When the state employment relations board notifies a public employer that it has certified an employee organization as exclusive representative for a unit of its employees, the public employer shall designate an employer representative and promptly notify the board and the employee organization of his identity and address. On certification, the employee organization shall designate an employee representative and promptly notify the board and the public employer of his identity and address. The board or any party shall address to the appropriate designated representative all communications concerned with collective relationships under Chapter 4117 of the Revised Code. In the case of municipal corporations, counties, school districts, educational service centers, villages, and townships, the designation of the employer representative is as provided in division (C) of section 4117.10 of the Revised Code. The designated representative of a party may sign agreements resulting from collective bargaining on behalf of his designator; but the agreements are subject to the procedures set forth in Chapter 4117 of the Revised Code.