1. No person shall practice occupational therapy or hold himself or herself out as an occupational therapist or occupational therapy assistant or as being able to practice occupational therapy, or to render occupational therapy services in this state unless such person is licensed or holds a valid permit pursuant to sections 324.050 to 324.089.

2. A licensed occupational therapy assistant shall be directly supervised by a licensed occupational therapist. The licensed occupational therapist shall have the responsibility of supervising the occupational therapy treatment program. No licensed occupational therapist shall have under his or her direct supervision more than four occupational therapy assistants.