olemus
tõhususe mõõt: tulemi ja ressursikulu suhe

ISO/IEC/IEEE 24765:
töösaaduse ja tööpanuse suhe
= ratio of work product to work effort

ülevaateid
https://www.oecd.org/sdd/productivity-stats/40526851.pdf

https://en.wikipedia.org/wiki/Productivity

https://en.wikipedia.org/wiki/Workforce_productivity

https://en.wikipedia.org/wiki/Total_factor_productivity

https://www.oecd.org/sdd/productivity-stats/2352458.pdf

https://www.diva-portal.org/smash/get/diva2:551581/fulltext01.pdf

http://www.jiwaji.edu/pdf/ecourse/political_science/MBA_HRD_II_SEM_202-converted.pdf