For instance consider psychiatrist, clinical psychologist, clinical social worker, family/marriage therapists, occupational therapists (in some places they can provide therapy), professional counselors, etc.
I've found research articles talking about stressful careers in general but not comparison. Wiki contributors cite an article from the 80s saying, "Professions with high levels of burnout include social workers, nurses, teachers, lawyers, engineers, medical practitioners, customer service representatives, and police officers. One reason why burnout is so prevalent within the human services field is due in part to the high-stress work environment and emotional demands of the job."