The detailed analyses of individual jobs reinforced the previous finding that the time-spans of jobs could be meas­ ured. But they did more than that. They gave evidence that the use of time-span of discretion for measuring work might lead to a new and different perception of salary and status

problems, so that they could be settled in a manner that took into account the changes and fluctuations always occurring as a result of changes in work, or in people, or in negotiated wage levels.