The conventional wisdom is that the rising productivity in the U.S. ma
nufacturing sector in the 1980s has been driven by the apparently perv
asive downsizing over this period. Aggregate evidence clearly shows fa
lling employment accompanying the rise in productivity. In this paper,
we examine the microeconomic evidence using the plant level data from
the Longitudinal Research Database (LRD). In contrast to the conventi
onal wisdom, we find that plants that increased employment as well as
productivity contribute almost as much to overall productivity growth
in the 1980s as the plants that increased productivity at the expense
of employment. Further, there are striking differences by sector (defi
ned by industry, size, region, wages, and ownership type) in the alloc
ation of plants in terms of whether they upsize or downsize and whethe
r they increase or decrease productivity. Nevertheless, in spite of th
e striking differences across sectors defined in a variety of ways, mo
st of the variance of productivity and employment growth is accounted
for by idiosyncratic factors.