The amount of change resulting from the implementation of the Bibliographic Automation of Large Library Operations using a Time-sharing System (BALLOTS) is analyzed, in terms of (1) physical room arrangement, (2) work procedure, and (3) organizational structure. Also considered is the factor of amount of time the new system has been in use. Information resulting from a telephone survey to the head of cataloging for 44 participating BALLOTS libraries using the system for three months or more provides the basis for statistical analysis of these three aspects. Statistical analysis of the questionnaire follows chapters on a brief history of library automation for technical processing, and a library/non-library (i.e. industry) literature review of impact of automation on the work environment. Findings showed that the greatest amount of change occurred in work procedure, and the least amount in organizational structure. Libraries using BALLOTS more than 12 months perceived more change in organizational structure than those using the system for a shorter period. Appended are the questionnaire, lists of study population, library statistics, and response data by library. (SW)