If you consider blue collar work as "manual labor" and white collar work as "knowledge work", then there likely is a middle-category that is a mix of both - "kn

If you consider blue collar work as "manual labor" and white collar work as "knowledge work", then there likely is a middle-category that is a mix of both - "knowledge work that require you to use your hands to deliver results". Peter Drucker called these folks "knowledge technologists": http://www.economist.com/node/770819 http://www.economist.com/node/770819 ... And believed probably will be the majority of workers in a developed countries over the next century.