Question: osha how to report violation?
Answer: Online - Use the Online Complaint Form. ... 
Fax/Mail/Email - Complete the OSHA Complaint Form [En Español], or Send a Letter Describing Your Complaint. ... 
Telephone - Call Your Local OSHA Office or 800-321-6742 (OSHA) ... 
In Person - Visit Your Local OSHA Office. ... 
Online - Use the Online Whistleblower Complaint Form.