Earlier quoted context omitted.
Because clients are rarely capable of judging competency. You can crack pipes with a snake. Furthermore, certifications typically come with a registration requirement, meaning clients have a mechanism for formally filing complaints. Similarly, there are often bond requirements, meaning you know that if the technician screws up a job you'll have a decent chance at recovering damages. Getting a bond without securing th…
ALL certification requirements are intended to limit entrants into the market. Whether or not that's worthwhile is subjective. If a client is uncertain of their ability to judge risk, then they can hire from a trusted industry provider/union and pay a premium. I'd still like the ability to legally hire a poor person who may not have received a good enough public education to fulfill all of the state requirements for…
1. You could still hire anyone you want. Certificated or not...
2. The certificate is not just some random piece of paper. It does (or at least should) actually prove that you had some training in that field and are skilled.
If some people are unable to get such a training and a certificate, then the problem lies somewhere else (i.e. the reasons why they can't...).