Okla. Stat. tit. 68, § 68-1705: Notice upon completion of work

Every such contractor shall also give written notice to the Tax

Commission, the Oklahoma Employment Security Commission, the State

Industrial Court, and the county assessor of each county in which

such contract work or service has been performed, by certified mail,

with return receipt requested, immediately upon completion of the

work and services required by any such contract. The date of

mailing such notice shall, for the purposes of this article, be

considered the date of the completion of said contract. No action

shall be commenced on the surety bond required by this article after

the expiration of one (1) year from the date of the mailing of said

notice of the completion of the contract.