This summary presents highlights from the Report of the Working Party on On-Job Training of Great Britain's Electricity Supply Industry Training Committee (ESITC). Changes that have affected the way on-the-job training is carried out are listed. On-the-job training (OJT) is defined, and recipients of such training are described. Provided next are lists of complaints of trainees, complaints of staff involved in providing training, and problems experienced by managers and supervisors in providing OJT. A number of good practices are then identified. A brief discussion follows of four projects set up to test the feasibility of a particular OJT system and to identify the benefits and difficulties involved. Results of three of the four projects are presented. The training objective approach to training is briefly considered. Finally, the likely costs, resources, and benefits of setting up systematic OJT are discussed. Attachments include a listing of important factors in setting up good OJT systems and a listing of discussion points. Recommendations for improving OJT in the electricity supply industry are appended. (YLB)