When I lived in New Caledonia growing up, we had a similar service which used reusable food "boxes" that would get delivered to your front door or to your work every lunch.
It would be left on your door step and it was up to you to grab it quickly and refrigerate it. This was in a tropical country. No one ever got sick.
Seems like regulatory overkill, especially in a place where half the year the outside temperature is colder than most fridges.
(Link in French for those curious, it's called "la gamelle" and it's still going strong today, albeit with throwaway plastic containers.http://lafamilletortue.com/gamelle-nouvelle-caledonie/ )