I think if you have the Workstation software, most of the 3 volume set would be the verbal description of the jobs and it would be repetitive to order the set. Plus, if you want to include the information into a report of some type, you would be re-typing text from the set vs. copying and pasting from the Workstation. The paperback might be a good desk reference and include information not available from the Workstation (preamble, definitions of Occasional, Frequent and Constant, the different classifications of work, etc.).