Yes, I think anyone that handles food at a restaurant needs to be required to take a food safety certification course. There should be training that addresses hygiene, safe food temperatures, cross contamination from raw meats, and how to sanitize to reduce the risk of salmonella. Every restaurant should make sure their workers get certified immediately.
A specific food safety certification course should be required for every worker that handles food at a restaurant. This is because many people are not raised with being taught to wash their hands. In addition, if people make a low amount of money they might not care enough to worry about the safety and health of their patrons.
Yes, a specific food safety certification course be required for every worker that handles food at a restaurant, because this could be a simple way to prevent a lot of illnesses. It would not take much for food service workers to watch a simple video about not serving bad food.
I do not believe there should be specific food safety certification courses required for every worker that handles food at a restaurant. Restaurants should be able to train these people with their own methods, not a pre-formulated training class. Many of these workers are low-wage so why force them into obtaining certifications the company is likely to gloss over anyway.