20thcentury australia automation businessrelocation ca1l35-1982 canada casestudies collectivebargaining computers computerterminals congresses e economicaspects economicconditions economichistory economics effectoftechnologicalinnovationson electronicdataprocessing employment employmentforecasting forecasting forecasts healthaspects history industrial industrialhygiene industrialproductivity industrialrelations informationsociety informationtechnology laborproductivity laborsupply machineryintheworkplace managementrights microelectronics occupationalretraining officepractice plantshutdowns politicalaspects qualityofworklife restrictivepracticesinindustrialrelations restrictivepracticesinlaborrelations robotics robots socialaspects structuralunemployment subcontracting technologicalinnovations technology technologyandcivilization twenty-firstcentury unemployment unitedstates women