I got several certifications saying that I had been trained in sanitary practices and another that said I knew kitchen safety. There were easy to get through the community college where I was taking culinary classes.
When I went to get my first big job after school I think these certifications really helped. More people than you realize don't understand best practices inside of a kitchen. They can compromise health and safety. If you have a way of confirming that new employees know how to keep a kitchen clean and safe that provides a lot of confidence. People looking to find work in kitchens should really consider getting certified.