Missouri Revised Statutes Title XVIII. Labor and Industrial Relations § 294.060. Work certificates or work permits transmitted to employer, return to officer, reissue, record

1. Whenever a child is granted a work certificate or work permit, the certificate or work permit shall be transmitted by the issuing officer to the employer of the child and a copy shall be transmitted to the division. The employer shall keep the work certificate or work permit on file and shall post in a conspicuous place in the employer's place of business a list of all children who are employed and under the age of sixteen.

2. On termination of the employment of the child, the child's work certificate or work permit shall be sent immediately by the employer to the officer who issued it.

3. A new certificate or work permit may be issued for a child whose certificate or work permit has been returned by the employer to the issuing officer.

4. A copy of each work certificate or work permit issued and notice of its cancellation shall be retained by the issuing officer and a copy shall be transmitted by the issuing officer to the division.