
Firm-level analysis
The contribution of IT
at the firm level
Factors that affect
the impact of IT
IT use is
complementary to skills
A17 Dunne, T. and J. Schmitz (1995),
“Wages, Employment Structure and
Employer Size- Wage Premia: Their
Relationship to Advanced-technology
Usage at US Manufacturing
Establishments”,
Economica, March.
A18 Doms, M.,
T. Dunne and K.R. Troske (1997),
“Workers, Wages and Technology”,
Quarterly Journal of Economics, 112, No. 1.
A19 Luque, A. (2000),
“An Option-Value Approach to Technology
Adoption in US Manufacturing:
Evidence from Plant-Level Data”,
CES Working Papers, No. 00-12,
Center for Economic Studies.
A20 Entorf, H. and F. Kramarz (1998),
“The Impact of New Technologies
on Wages: Lessons from Matching Panels
on Employees and on their Firms”,
Economic Innovation
and New Technology, Vol. 5.
A15 Baily, M.N.,
C. Hulten, and D. Campbell (1992),
“Productivity Dynamics
in Manufacturing Plants”,
Brookings Papers on Economic Activity:
Microeconomics.
A16 Krueger, A.B. (1993),
“How Computers Have Changed
the Wage Structure: Evidence
from Microdata, 1984-1989”,
The Quarterly Journal of Economics,
February.
Factors that affect the impact of IT
The evidence summarised above suggests that the use of IT does have
impacts on firm performance, but primarily, or only, when accompanied
by other changes and investments. Early studies on the rates of return
to IT investment suggested that the returns to IT were relatively high
compared to other investments in fixed assets. This is commonly
attributed to the fact that IT investment is accompanied by many other
expenditures in the firm, that are not necessarily counted as investment,
for example, expenditure on skills and organisational change. Many
empirical studies confirm that IT primarily affects firms where skills have
been improved and organisational changes have been introduced. The
role of these complementary factors is also raised in the literature
on co-invention [A14], which argues that users help make investment
in technologies, such as IT, more valuable through their own
experimentation and invention. Without this process of “co-invention”,
which often has a slower pace than technological invention, the economic
impact of IT may be limited. The firm-level evidence also suggests
that the uptake and impact of IT differs across firms, varying according
to size of firm, age of the firm, activity, etc. This section looks at
some of this evidence and discusses the main complementary factors
for IT investment.
IT use is complementary to skills
A substantial number of longitudinal studies address the interaction
between technology and human capital, and their joint impact on
productivity performance. Although few longitudinal databases
include data on worker skills or occupations, some address human capital
through wages, arguing that wages are positively correlated with worker
skills. For the United States, Baily, Hulten and Campbell [A15]found
a positive link between wages and productivity, although the causality
was not clear. Krueger [A16]used cross-sectional data and found that
workers using computers were better paid than those that do not use
computers. Dunne and Schmitz [A17]found that workers employed
in establishments that use advanced technologies also pay higher wages.
Doms, Dunne and Troske [A18]found no correlation between
technology adoption and wages, however, and conclude that
technologically advanced plants pay higher wages both before and after
the adoption of new technologies. A more recent study by Luque and
Miranda [A19]found that technological change in US manufacturing
was skill-biased.
Some studies are also available for France. The French data include
details about worker characteristics, which allows for a more detailed
examination of the results. Entorf and Kramarz [A20]linked a variety
of official statistics from the Institut National de la Statistique et des
Etudes to examine the interaction between computer use and wages.
They found that computer-based technologies are often used by workers
with higher skills. These workers become more productive when they
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