Okla. Stat. tit. 36 § 1213
If any person shall ask to be excused from attending and testifying or from producing any books, papers, records, correspondence or other documents at any hearing on the ground that the testimony or evidence required of the person may tend to incriminate the person or subject the person to a penalty or forfeiture, and shall notwithstanding be directed to give such testimony or produce such evidence, the person must nonetheless comply with such direction, but shall not thereafter be prosecuted or subjected to any criminal penalty of forfeiture for or on account of any evidence which the person may testify or produce pursuant thereto. No testimony so given or evidence produced shall be received against the person upon any criminal action, investigation or proceeding; provided, however, individuals so testifying shall not be exempt from prosecution or punishment for any perjury committed by them while so testifying and the testimony or evidence so given or produced shall be admissible against them upon any criminal action, investigation or proceeding concerning such perjury, and such individuals shall not be exempt from the refusal, revocation or suspension of any license, permission or authority conferred, or to be conferred, pursuant to the insurance law of this state.
Okla. Stat. tit. 36, § 1213