But licensing the individuals doesn’t actually address the problem of enforcement. You STILL need to enforce at the business level.
All the licensing does is impose another regulation (that you, personally, don’t care about, i.e. the workers have a specific license) in addition to the ones you do care about (i.e. the business is operating safely).
To me, the only utility for a licensing system, is in cases where a job is of such a life-critical nature that you need to ensure that workers are properly trained, or else people will die.
So you do this for things like heavy construction, or medical stuff, because if some rando comes in and doesn’t know what he’s doing, consumers will suffer in permanent, irreparable ways.
But that licensing does not take the place of what I think you are more concerned with, which is that people sometimes do shitty jobs and break the rules.
Even in an industry that requires licensing for the workers, the licensing scheme itself does not in any replace the need for regulatory oversight, because even if someone is licensed, that still does not guarantee that they actually perform their jobs in a manner that is in line with the training they received. All the licensing does in this regard, is potentially add an additional punishment where they could lose their license. However, in really critical cases of incompetence/neglect (i.e. the cases which we actually should be worried about), there are already tons of other civil and criminal liabilities that perpetrators would be faced with.
So we are left with a situation where licensing provides some utility in certain critical industries, by essentially guaranteeing that a person has been educated to some minimal standard. This doesn’t guarantee they are actually good at their job, but it gives consumers some suggestion of basic competence in addition to the fact the person is still performing their job.
But beyond that, it makes more sense to regulate the business itself when it comes to actual performance. Licensing does not achieve such regulation, and the business regulation needs to take place whether the licensing of individual workers exists or does not. And since that regulation is taking place, in cases where the outcome is not critical, the licensing merely creates a barrier to workers’ entry.
Certainly, individual workers may CHOOSE to get certifications for skills, because doing so makes them more appealing as employees, and it can potentially offer peace of mind to consumers, but in non-critical industries this should not be required in order to perform the work.