The National Commission for the Certification of Crane Operators (NCCCO) has prepared this document to help employers, operators, riggers and signal persons better understand the personnel qualification requirements under the Federal OSHA's new rules for Cranes and Derricks in Construction (29 CFR 1926, Subpart CC). In addition to the full text of the rule at the end of the document, the specific sections applicable to personnel qualification requirements have been extracted into separate chapters, along with answers to numerous frequently asked questions submitted to NCCCO. A memo and letter of interpretation from OSHA that clarify the difference between “construction,” to which this rule applies, and “maintenance,” to which the rule does not apply, are also included. This information is provided as a public service by NCCCO. Although every effort has been made to ensure accuracy in this response, no responsibility can be assumed by NCCCO for errors. OSHA remains the sole authority for interpretations of federal labor standards and should be consulted accordingly.