Core document types and what they mean
Licenses
A trade license normally authorizes a person or company to perform work within a regulated jurisdiction. It may require examinations, verifiable experience, background review, bonding, insurance, or a responsible qualifying individual. The key distinction is legal authority: without the license, the work may be unlawful even if the worker is technically capable.
Registrations
A registration is often administrative rather than skill-based. It can identify a contractor, apprentice, firm, or specialty provider to a state, municipality, or program. Registration may still be mandatory, but it commonly functions as a roster, filing, or notice requirement instead of a proof of deep technical mastery.
Certifications
A certification usually shows that a person met a published training or testing standard. It may validate competence in welding procedure performance, refrigeration handling, automation controls, metrology, or a specific product family. Certifications can be valuable in hiring and project qualification even where they do not replace a required state license.
Safety qualifications
Safety documents prove readiness for hazardous environments and controlled tasks. OSHA cards, confined-space training, fall protection user training, lift operator qualifications, and first-aid or CPR records are commonly requested before a worker enters a site or assumes a task. These items are about hazard control and emergency readiness, not permission to pull permits or contract regulated work.