This opinion reverses an electrician’s $12.6 million judgment for injuries he sustained due to a defective roof access hatch which was defective and slammed shut on his back herniating several discs. The Privette doctrine barred the plaintiff’s recovery. He was a worker employed by a licensed contractor whom the property owner had hired. The defects in the roof hatch were discoverable and the property owner had not retained control over safety precautions on the job site.