Exactly, @ragingloli. For a variety of examples of restaurants operating in less than appetizing ways, just catch up to Restaurant Impossible (Food Network originally, also 25 episodes on Netflix) or Kitchen Nightmares (FOX originally, also a few seasons available on Netflix.)
I have no doubt that there are many, many more restaurants (especially fast food) nationwide where employee hand washing is the least of their problems. The sad thing is: the market is blind to such problems, even though they represent threats to public health.
This is also the flaw in markets regulating themselves: where profit maximization is the only goal, cutting corners to minimize costs is considered great business practice. What better way for a restaurant to reduce operating costs than to reduce water use by discouraging employee hand washing?
Am I advocating government step in with new mandates in this area? Absolutely not, because government mandates always go too far to the point of absurdity.