Workers or their representatives may file a complaint online or by phone, mail, email or fax with the local OSHA office and request an inspection of a workplace if they believe there is a violation of a safety or health standard, or if there is any danger that threatens physical harm. A worker may also ask OSHA not to reveal his or her name. In addition, anyone who knows about a workplace safety or health hazard may report unsafe conditions to OSHA, and OSHA will investigate the concerns reported.