The purpose of this study was to assess the long-term effects of a corporate training program in business and technical writing. Subjects were 135 employees who attended ten three-day workshops during the course of one year. The effects of the workshops were assessed in two stages: immediately after the training through an evaluation form and one to two years later through an interview. The interview consisted of 6 open-ended questions and 42 closed-ended questions. Results indicated that (1) those elements of the writing workshop that remained most useful to the participants were those relating to organizing material and exercises in writing clearly and concisely, (2) the training in writing skills did appear to have some carry-over effect to reading skills, and (3) those areas of the training program that might be changed for best effect are the format (three-day), and the scheduling (Monday-Tuesday-Wednesday). Business communication consultants can improve their working relationships with their clients by offering such long-term follow-up assessments as part of their portfolios. (Appended is the interview guide for the follow-up assessment of the corporate seminars on written communications.) (HOD)