Output per worker 2012 Construction Data

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    IMPLAN Support
    Hi Cullen, We just wanted to let you know that we are looking into this and we will get back to you as soon as we have an answer. Thank your for your patience.
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    IMPLAN Support
    Hi Cullen, Sorry to take so long to get back on this, but we had to dig into the data. In sum it appears that total construction employment changed very little between 2011 to 2012. That is, wage and salary jobs in the construction sector increased between 2011 and 2012 while proprietors decreased. However, our interpretation of the NIPA (Bureau of Economic Analysis National Income and Product Accounts) investment in structures has evolved. In our data development procedures, a “NIPA control value” (or NCV) is the value to which output in all construction sectors is benchmarked. In 2011, the IMPLAN “New construction” and “Repair and maintenance construction” sectors combined used NIPA “Construction” as the NCV benchmark, using the assumption that all construction activity should be treated as an investment. For the 2012 data set we changed our interpretation regarding how much of the construction NCV should be treated as investment rather than ordinary expense. We assumed that only “New construction” should be considered investment and “Repair and maintenance” should be treated as an expense. Further, we feel that redefinitions (reallocating “New construction”-related activity from non-construction sector to the “New construction” sector) should be added to the construction NCV, increasing the output of the “New construction” relative to 2011 as you noted. NCV from NIPA: 2011 NCV “NIPA investment in structures (public and private)” = 1,021 billions 2012 NCV “NIPA investment in structures (public and private)” = 1,110 billions
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