General Plastics Corporation instituted a new absenteeism control policy that took effect the first day of June. It expects the new policy to result in a 25 percent reduction in absenteeism the first year. Like the previous policy, the new program counts vacation days as absenteeism. On the first of September, the personnel director evaluated the results of the program for the first three months and was disappointed to find that absenteeism had dropped only half of 1 percent. What is the likely problem?