Mo. Rev. Stat. § 217.270: Parole board to have access to offenders and records, when.

All correctional employees shall:

(1) Grant to members of the state parole board or its properly accredited representatives access at all reasonable times to any offender;

(2) Furnish to the board the reports that the board requires concerning the conduct and character of any offender in their custody; and

(3) Furnish any other facts deemed pertinent by the board in the determination of whether an offender shall be paroled.