Just FYI- Licensing is just for the Business to have an accountability structure and someone to hold responsible .
Whole lot more to this: Legal, Training, Safety, Backgrounds
Qualifications are another point, usually I find that 20% of the installers are truly qualified, they are usually cross trained from other fields. Outsourced labor, just cheap temps for the install.
IT usually has a lot of great installers, some great qualified individuals , but as far as the business end of it goes, they know nothing. Kept in the dark on a lot of subject matters.
Getting a certification just allows you to be hired, not qualified. Also there are different categories of qualification's. No one is (supreme) in these categories, as with the marketplace where it's employee's are subjective to available work.
We see a lot of companies, only allow so much, the positon in the company.
New laws create the standards for the changes in the process.
Nicet,Factory Certs,Apprecticeships,organizations which certify that you have knowledge & experiece .
Ca. has State Testing to verify your knowledge after you get experience in the field.
The 4,6,8,12 Rule of Experience, Apprenticeship, journeyman, senior journeyman, Master. No one Simply Test & get's on board. The Hardest Challenge today is getting Both on board. Experience, Knowledge, Background, Training