Riggers are qualified

Verify: ask for their card or get their name and confirm via certificate kept in office/trailer.

Okland

Subpart CC 2. (a) pg 57

Qualified Rigger (QR/QSP): All riggers shall meet the qualifications stipulated by OSHA for a qualified rigger and the qualifications listed in this document.

OSHA

1926.1404(r)(1)