Entry-level behavioral therapist jobs involve providing mental health counseling and therapy services to patients. Entry-level workers often gain clinical experience under the supervision of senior therapists. Your duties can vary depending on the needs of each patient with whom you work. You evaluate the condition and needs of each client, and after this assessment, you create a treatment plan that helps the client address mental health or developmental issues and change unwanted behaviors. The responsibilities of some entry-level behavioral specialists include implementing a treatment plan by assisting a patient daily. These positions often involve working with people with special needs.