A tower crane operator uses heavy equipment to lift and move construction materials and equipment around a job site. As a tower crane operator, you need specialized training in how to safely operate a crane. The Occupational Safety and Health Administration (OSHA) offers a 10-hour training program, and the National Commission for the Certification of Crane Operators (NCCCO) provides tower crane certification. While operating your tower crane, you must follow established load limits for your heavy equipment, watch signalers to control crane movement, and communicate with your crew via radio.