JOB TRAINING AND VOCATIONAL REHABILITATION SERVICES (SIC 833) Establishments primarily engaged in providing training, work experience, and vocational rehabilitation services for the unemployed, the underemployed, the physically challenged, and to persons who have a job market disadvantage because of lack of education or experience, skill obsolescence, or personal characteristics or problems. Included are upgrading and job development services, skill training, world-of-work orientation, and vocational rehabilitation counseling. Union apprentice training schools are classified in Industry 8249.