For a useful discussion of spillovers and possible transmission mechanisms,
see Markusen’s (1998) review of multinationals. See also Caves (1974),
Globerman (1979) and Baldwin and Hanel (2003).
For an overview of micro-economic research on
productivity dynamics, see Bartelsman and Doms (2000) that includes a more
comprehensive discussion of many of these points. For a summary of the issues
involved in measuring the impact of turnover on productivity growth, see Baldwin
and Gu (2006).
Earlier studies (Baldwin 1995)
find similar orders of magnitude.
The contribution of firm turnover
to aggregate productivity growth is even higher in the retail sector (Baldwin
and Gu 2008).
This characterization
of spillovers as an involuntary transmission of benefits—productive
knowledge not fully appropriated by the firm generating the externality—is
found in Markusen (1998).
Foreign firms are not the only source of technological
spillovers. Griffith, Redding and Simpson (2002, p. 24) also report that
“high productivity foreign-owned establishments are found to make an
important contribution to productivity growth by pushing out the technological
frontier, but high productivity UK-owned firms, to the extent that they are
also technological leaders in some industries, are also important sources
of technology transfer.” Baldwin and Gu (2005, p. 6) present similar
findings, arguing that the “foreign ownership advantage is found to
be a multinational advantage;” the authors note that Canadian multinationals
operating in Canadian manufacturing industries exhibit technology, wage and
productivity profiles on par with foreign multinationals.
We should note
that testing for spillover effects was not the primary focus of Baldwin, as
his analysis focused on estimating the contribution of plant turnover to aggregate
productivity growth (see 1995, chap. 9).
Some analysis of transmission mechanisms is found in Baldwin and Gu (2005).
Using a linked dataset that combines longitudinal data on plant performance
with data collected from a technology survey, the authors test for the presence
of spillovers by examining whether cross-industry variation in the share of
output under foreign control influences (a) the level of competition faced
by domestic plants, and (b) the extent to which these plants adopt advanced
technologies. In both cases, the impact of foreign control is found to be
positive and significant, suggesting that competition and technology use are
areas in which domestic companies benefit from the co-existence of foreign-controlled
plants.
The version of the Longitudinal Manufacturing
Research File (LMRF) used here covers the years from 1973 to 1999 inclusive
with a constant Standard Industrial Classification industry code. Many of
the studies that have utilized the LMRF are published in Statistics Canada’s
Economic Analysis Research Paper Series.
These spatial data were developed at Statistics Canada to support a series
of research projects that have examined the link between urban agglomeration
and productivity growth (e.g., Baldwin et al. 2007; Baldwin, Brown and
Rigby 2008).
See CANSIM table
383-0022. These estimates of annualized growth
are based on value added.
For each of
our analysis samples, the incumbent average is calculated as the weighted
average level of labour productivity for all continuing plants operating during
the observation period. This incumbent population is effectively the union
of market-share gainers and market-share decliners as described herein, as
these tabulations exclude the impact of entrants and exits.
Productivity growth for plant i is calculated as the compound annual
growth rate over the analysis period. Labour productivity for plant i is
the ratio of real manufacturing production to plant employment. We use production
per worker rather than value added per worker in order to reduce the number
of aberrant observations in the microdata due to reporting errors. Previous
studies have produced quite similar results at a more aggregated industry
level using both formulations and our experiments produced the same result.
Note that these descriptive tabulations
do not take differences in industry membership into account.
Again, we reserve any rigorous consideration of industry
effects for the formal econometric model.
As noted in Section 3, our measure of productivity growth is the plant’s
compound annual rate of productivity growth over the observation period.
This ranking was based
on all plants operating in the start year of the analysis period—both
continuers and non-continuers.
The use of productivity gaps to operationalize
the distance from the frontier is also employed by Griffith, Redding and Simpson
(2002), who employ a measure of total factor productivity.
We are tacitly assuming that the source of these shared effects is exogenous
to both market-share gainers and market-share decliners. A full consideration
of these shared effects—beyond our scope here—would necessarily
ask whether they are truly exogenous. If some industries experience more rapid
productivity growth than others, and this higher productivity emanates directly
from the actions of market-share gainers, then these industry conditions do
ostensibly represent a type of spillover—as gainers are creating the
conditions that enable struggling firms to prosper. These distinctions underscore
the challenges of conceptualizing spillovers within dynamic systems of competitive
reallocation.
Geographic areas were defined as census metropolitan area/census area/census
divisions.
A detailed discussion of the
edit rules that were applied to our data samples, along with descriptive statistics,
is found in Appendix A.
We have
ignored the impact of the frontier because it has a large negative effect
when it is significant, thereby suggesting that it subtracts from rather than
contributes to the centripetal effect of the externality.
See Baldwin and
Rafiquzzaman (1994) for a discussion of the methodology used to create these
groupings.