Certification of the competency of workers is a standard role of professional associations, such as ADWA. Certification has several components:
- Core competencies that include standards to be met
- Evidence that the worker meets those standards of knowledge, skill or ability
- A process by which evidence is gathered and evaluated fairly
It is important that the standards be easy to understand and demonstrable/measurable by some means (e.g., assessed coursework, work sample, essay test, testamonial).