Okla. Stat. tit. 12, § 1194

No judgment shall be rendered against the state, or any county, city, town, board of education, school board or any municipal subdivision of the state named as garnishee, but judgment may be rendered against any person served pursuant to Section 1193 of this title, who shall willfully fail, neglect or refuse to answer garnishment summons; provided, no person employed by the state or any county, city, town, board of education, school board, or any municipal subdivision of the state shall be held personally liable unless the failure, neglect, or refusal to answer is willful.