English version

man-year

From Longman Dictionary of Contemporary Englishman-yearˈman-year noun [countable] technical  the amount of work done by one person in a year, used as a measurement The project will take five man-years to complete.
Examples from the Corpus
man-yearTypical applications are found in companies with several medium-sized projects, i.e. ranging from one half to five man-years.But before the advent of data-processing capacity, the actual analyses would have taken man-years of clerical toil to complete.
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