This document is the General Research Corporation (GRC) report on Task II, which called for the development of career fields for headquarters and regional positions of the U.S. Nuclear Regulatory Commission Office of Inspection and Enforcement (NRC/IE). GRC examined the data of Task I (development of qualifications requirements) for commonality of knowledge and performance, postulated career fields as a result of that examination, and tested and revised those career fields by more extensive examination. Proposed as a result of this are four career fields: construction-vendor, health physics, reactor operations, and safeguards; and two "career ladders": fuel facilities and investigation. (The term "career ladder" was chosen to describe the relatively narrow patterns of positions open to its members.) All career fields include subfields, which are described in full in the report. In addition to recommending acceptance of these career fields, this document proposes the combination of certain subfields, the retitling of some positions, and the adoption of a standard nomenclature for all NRC/IE positions. (Author)