By attending a 40 hour OSHA supervisor training, a supervisor or candidate can increase his/her quality score to a lot. His resume can be shortlisted at first then the other candidates. Most of the fresher or experience0d candidate for supervisor vacancy should attend the Osha Supervisor training course lasting for 40 hours. But the thing is that the experience makes difference between fresher and experienced candidates. Hence, the candidates that are having both experience and supervisor training certificate, eligible for the job of supervisor designation.