English

person-year

One person's working time for a year, or the equivalent, used as a measure of how much work or labor is required or consumed to perform some task.

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    Compound of person + year, although, as with any such unit of measure (e.g., ton-miles, newton metres), the mathematical relationship of multiplication is simultaneously involved: X persons working during Y years = X × Y = Z person-years.

    From Wiktionary, CC BY-SA 4.0.

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