An Arthur Young study of training time showed that employees who attend formal training classes increased their productivity by 75% as compared to those who did not attend formal training. This statistic would be based on such software packages as Word or Excel. For some of the more technical packages such as InDesign for desktop publishing or Corel Draw for art work and sophisticated drawings, the percentage would be much greater. The same statistic would apply to the more advanced features of software packages such as Macros or Programming.