The One To One rule rule for NCCA Membership dictates that the business owner or a suitable senior person attends the Association's, or IICRC, training courses.
The employed technicians should have attended either the same courses or any other recognised industry training course eg Prochem, Chemspec etc. etc. and have proof of attendance.
Appreciating that some companies will have their own in-house training, this has been taken on board too. Any technician in this scenario will be required to sit what has been called a Knowledge Paper. The naming was quite deliberate as research has revealed that some technicians, for whatever reason, are not very good at written english. The title Exam or Test Paper could therefore be a little intimidating. Assictance with reading and writting the paper is permitted. This does happen too on the NCCA's more formal course.
The Association now has a system whereby all technicians have some form of training, understanding and knowledge.
I'm now bordering on the confidentiality issue as a past Director. The criteria for employed technicians will change in the future. It was felt that to impose a similar training criteria the same for principals and employed technicians was, at present, unworkable.
As for policing, there have already been examples dealt with. By necessity, policing requires a degree of trust, and members and others participation. So, if you suspect that any company is not abiding by the One to One rule, all you need to do is contact the NCCA Office who will check the membership records.
Safe and happy cleaning

Ken