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THE IMPACT OF INTER-FIRM COLLABORATION ON THE PERFORMANCE OF SUPPLY CHAIN MANAGEMENT
Seung-Chul Kim
Hanyang University, School of Business, Seoul, South Korea.
Tel: (822) 2220-1069; Fax: (822) 2220-1169; E-mail: sckim888 @ hanyang.ac.kr
Se-Hyung Cho
Konyang University, Department of Management Information Systems, South Korea
Tel: (8241) 730-5180; Fax: (8241)733-2070; E-mail: [email protected]
Yong-Kyun Chung
Kangwon National University, Div. of Econ. and Int. Trade, South Korea
Tel: (8233) 250-6187; Fax: (8233) 256-4088; E-mail: [email protected]
July 11-13, 2007
International Conference on Business and Information (BAI2007)
organized by International Business Academics Consortium
Selected Track Area : Operations Management
Address all correspondence to:
Seung-Chul Kim
Hanyang University, School of Business
17 Haengdang-dong, Seongdong-gu, Seoul 133-791, Korea
TEL: (822) 2220-1069; FAX: (822) 2220-1169; E-MAIL: sckim888 @ hanyang.ac.kr
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THE IMPACT OF INTER-FIRM COLLABORATION ON THE PERFORMANCE OF SUPPLY CHAIN
Seung-Chul Kim
Hanyang University, School of Business, Seoul, South Korea.
Tel: (822) 2220-1069; Fax: (822) 2220-1169; E-mail: sckim888 @ hanyang.ac.kr
Se-Hyung Cho
Konyang University, Department of Management Information Systems, South Korea
Tel: (8241) 730-5180; Fax: (8241)733-2070; E-mail: [email protected]
Yong-Kyun Chung
Kangwon National University, Div. of Econ. and Int. Trade, South Korea
Tel: (8233) 250-6187; Fax: (8233) 256-4088; E-mail: [email protected]
ABSTRACT
Inter-firm collaboration has a strong influence on the efficiency and the performance
of a supply chain as firms can achieve competitive advantage by working together with
their suppliers. There are many factors that can affect the inter-firm collaboration, and
the effect of each factor needs to be studied and understood for building an efficient
supply chain.
Automotive parts manufacturing industry consists of several layers of suppliers, and
they interact with one another in a network of complex relationships. It is a very ideal
industry to study the effect of inter-firm collaboration on supply chain management.
This paper examines the impact of inter-firm collaboration on the supply chain
performance in the context of automotive industry. We use the data collected from
Korean automotive parts manufacturers through survey questionnaires. This study will
be able to provide useful insights about how the buyer-supplier relationship should be
managed to make a more efficient supply chain and to improve supply chain
performance.
Key words: inter-firm collaboration; supply chain performance; auto parts
manufacturing industry; buyer-supplier relationship.
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INTRODUCTION
Inter-firm collaboration has become an important issue in supply chain management
since implementing supply chain management(SCM) successfully requires companies
to develop close collaborative relationships with their suppliers. Firms produce better
quality products at lower costs by working together with their suppliers and achieve a
strategic advantage in the competition as can be portrayed, for example, in the concept
of collaborative planning, forecasting and replenishment (CPFR). It is not, however,
easy to work with other companies which have different organizational cultures,
missions, IT systems, values, etc.
It is imperative to have a close collaboration between firms to build an efficient supply
chain as coordination through strategic partnerships replaces the vertical integration,
i.e. the conventional way, to attain the desired efficiency in the supply chain. Inter-firm
collaboration may be measured by the level of trust and satisfaction about the
relationship between two firms. Also, there are many factors that can affect the inter-
firm collaboration such as information system maturity, asset specific investment,
opportunistic behavior, communication, etc. Some factors have more influence on the
inter-firm collaboration while others might not be as important for maintaining it. The
effect of each factor needs to be studied and understood for effective supply chain
management.
Auto parts manufacturing industry consists of automobile manufacturers and several
layers of parts suppliers, and they interact with one another in a network of complex
relationships. The results of good collaboration between buyer and supplier firms are
often reflected in the performance of the supply chain which the buyer and supplier
firms belong to. One common form of the inter-firm collaboration that was developed
and extensively implemented in auto industry is Just-In-Time delivery (JIT) in which
we could observe close cooperation between buyer and supplier firms. In this regard, it
is a very ideal industry to study the effect of inter-firm collaboration on supply chain
management.
This paper examines the effect of inter-firm collaboration on the efficiency of supply
chain in the context of auto parts manufacturing industry. First, we identify the
important factors that affect inter-firm collaboration. Second, the impact of inter-firm
collaboration is measured on the performance of a supply chain. We use the data
collected from Korean automotive parts manufacturers through survey questionnaires.
Korea has a very sizable automobile industry with several world class auto
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manufacturers such as Hyundai Auto Co., Kia Auto Co., GM Daewoo, and Renault
Samsung. Also there are a large number of parts manufacturers and their suppliers in
the upstream of the Korean auto industry supply chain. This study will be able to
provide useful insights about how the buyer-supplier relationship should be managed
to achieve a better supply chain.
LITERATURE REVIEW
In recent times, no one question the importance of SCM for improving the firms’
performance in a networked economy. Usually, many firms cooperate to produce a
final product. In particular, an automobile manufacturer does not make every
component of a car in automobile manufacturing industry. Naturally car makers
purchase auto parts from many suppliers. In this structure, SCM is an important tool to
realize the efficiency in auto industry. Many previous studies investigated the
relationships between buyer firms and supplier firms, and found that both groups will
benefit more from the cooperative relationships than the competitive relationships.
Table 1 contains some of the previous research that investigated various types of the
buyer-supplier relationship and its impact on the firms.
TABLE 1. Summary of previous studies.
Researcher Content
Dyer(1996); Nishiguchi and
Brookfield (1997)
Compared U.S. and Japanese auto industries.
Japanese auto industry has more cooperative buyer-
supplier relationships.
Dywer, Schurr and Oh(1987)
Anderson and Narus(1990)
Maloni and Benton (1997)
Emphasized the importance of the buyer-supplier
cooperation.
Boddy et al. (1998)
Akintoye et al.(2000)
Wathne and Heide(2004)
Investigates key success factors in implementing
supply chain
Cooper (1993)
Lambert and Cooper(2000)
Reasons that firms form a supply chain (inventory
reduction, improving service, etc.).
Lamming (1993) Suggest a lean supply chain model in auto industry
to understand the buyer and supplier relationship.
Han (1993); Fisher et al.
(1994); Imne and Morris
(1993);Jap(1999)
The importance of buyer-supplier relationship for a
firm’s competitive advantage.
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Shapiro (1985); Spekman
(1988); Landeros and
Monczka (1989);Burt
(1989); Bensaou and
Venkatraman (1995); Helper
(1991); Helper and Sako
(1995)
Investigate the various types of buyer-supplier
relationship:
competitive vs. cooperative
open market negotiation vs. vertical integration
integrated vs. structural
Morgan and Hunt(1994)
Smith et al. (1995)
Akintoye et al.(2000)
Trust and cooperation among firms.
Landeros (1993) Define the cooperative relationships.
RESEARCH METHODOLOGY
Research model and hypotheses
A research model is constructed to depict the relationship among the factors as shown
in Figure 1. It shows the relationship between the success factors, inter-firm
collaboration, and SCM performance. The variables representing each factor of the
model will be identified from the analysis, and the relationship will be tested by using
statistical analysis.
The level of inter-firm collaboration is measured by surveying the supplier firms. That
is, first-tier supplier firms evaluate the first-level relationship (auto manufacturers and
first-tier parts suppliers), and second-tier supplier firms evaluate the second-level
relationship (first-tier parts suppliers and second-tier parts suppliers).
Figure 1 contains the research model showing the relationships between the tiers of
firms in the supply chain, and hypotheses are constructed as below for each of the
relationships indicated as H1 through H3.
H1: Success factors affect the collaboration level between firms.
H2: Important factors affecting collaboration are different between the first-level and
the second-level relationships.
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H3: SCM performance is positively related to the collaboration level between firms.
High level of inter-firm collaboration will result in high SCM performance.
FIGURE 1. Research model.
Data collection
Data for this study were collected from automotive parts manufacturers through survey
in 2006. The survey questionnaire consists of eighty two questions. The survey was
conducted by mails. The respondents are the staff of the sales department in the
supplier firms, and thus familiar with the relationships between their own company
and their buyer company. In this study, we analyze the impact of inter-firm
collaboration on the SCM performance. The inter-firm collaboration was measured
from the viewpoint of supplier firms because supplier firms are normally in a weaker
position in the relationships, and thus, we expect that it is possible to obtain more
conservative assessment of the inter-firm collaboration between supplier and buyer
firms.
About five hundred fifty questionnaires were mailed out to the companies listed on the
Korea Auto Industries Cooperation Association member directory, and seventy
responses were returned. A total of sixty five responses were used for this study after
five were discarded due to incomplete responses. They were divided into two groups
depending on their relationship with the automobile manufacturers. Fifty companies
were the first-tier suppliers, and fifteen companies were the second-tier suppliers. The
profile of the firms is shown in Table 2.
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The survey questions are answered by 7-point Likert-type scale except those requiring
single-item answers. We used descriptive statistics, factor analysis, correlation test,
and regression to analyze the data.
TABLE 2. Profile of the firms
Frequency Proportion
Sales in dollars 0 ~ $50 million 34 53.1%
$50 ~ $100 mil. 9 14.1
$100 ~ $200 mil. 8 12.5
$200 mil. ~ 13 20.3
No. of
employees
0 ~ 200 33 52.4%
200 ~ 500 16 25.4
500 ~ 1000 9 14.3
1000 ~ 5 7.9
Relationship
with Auto
manufacturer
1st-tier supplier 50 78.1%
2nd-tier supplier 10 15.6
Others 4 6.3
Length of
relationship
with the buyer
0 ~ 10 years 12 19.0%
10 ~ 20 years 20 31.7
20 ~ 30 years 18 28.6
30 years ~ 13 20.7
*The numbers do not add up to 65 since there are a few firms that did not
answer certain questions.
ANALYSES AND RESULTS
Statistical tests are conducted on the data to identify factors and to group them for
further analyses.
Identification of the factors and variables
The internal consistency reliabilities are tested for the measured variables, and the
results (Cronbach α> 0.6) show that all of them are above the acceptance level. Factor
analyses were conducted to identify the groupings of the variables for success factors,
inter-firm collaboration, and SCM performance. We used eigenvalue of 1 and the
factor loading of 0.5 as the selection criteria. The results yielded six factors that
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provide four variables for success factors and two variables for the level of inter-firm
collaboration. They are named as follows: IT maturity, asset specific investment,
opportunistic behavior, communication , trust, and satisfaction. Another factor analysis
produced three factors for SCM performance, and they are the efficiency, speed, and
effectiveness of SCM. The results are shown in Tables 3 and 4. Based on the results of
the factor analyses, factor groupings of the variables are made as shown in Table 5.
TABLE 3. Results of factor analysis to extract the success factors.
Factor
Quest.
Factor
Factor 1 Factor 2 Factor 3 Factor 4 Factor 5 Factor 6
IT util 54 .874 .125 .155 .198 -4.756E-02 9.802E-02
IT util 55 .850 -7.483E-02 1.035E-03 9.037E-02 -8.007E-02 .213
IT util 53 .844 .147 .173 .186 .167 4.987E-04
IT util 50 .827 1.864E-02 -.186 9.565E-02 1.847E-02 -.144
IT util 49 .810 1.952E-02 -.124 6.376E-02 5.018E-02 -7.863E-02
IT util 52 .746 .203 9.858E-02 5.446E-02 .282 -2.843E-02
Success-Relationship 16 1.538E-02 .859 6.644E-02 3.082E-02 .190 .198
Success-Relationship 17 .150 .855 .268 .121 8.990E-02 7.656E-02
Success-Relationship 19 .114 .844 .159 7.076E-02 2.236E-02 -1.011E-03
Success-Relationship 7 -3.287E-02 2.572E-02 .818 -.126 -.135 -3.749E-02
Success-Relationship 12 6.573E-02 .152 .730 -.264 .169 .227
Success-Relationship 15 -.161 .232 .707 5.329E-02 .166 -.355
Success-Relationship 14 .148 .249 .692 .247 -1.611E-02 -.126
Success-Coordination 28 .242 .104 -.174 .849 1.570E-03 -4.000E-02
Success-Coordination 25 .178 .190 -4.722E-02 .809 -9.984E-02 .261
Success-Coordination 29 9.314E-02 -4.997E-02 .107 .766 .205 .121
Success-Relationship 5 4.483E-02 .157 -7.205E-02 9.596E-02 .918 1.291E-02
Success-Relationship 4 .214 .108 .162 4.902E-03 .810 .342
Success-Relationship 23 -.137 .127 -8.016E-02 7.994E-02 .214 .827
Success-Relationship 21 .139 .159 -.102 .413 6.701E-02 .658
Reliability(Cronbach α) 0.9174 0.8666 0.7690 0.8096 0.7575 0.6318
Note: Principal component and Varimax rotation with Kaiser normalization.
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TABLE 4. Factor analysis for SCM performance variables.
Factor
Quest.
Factor
Factor 1 Factor 2 Factor 3
SCM Perf 10 .849 .255 -3.629E-02
SCM Perf 9 .795 .115 .161
SCM Perf 8 .754 .202 .316
SCM Perf 6 .737 .192 .335
SCM Perf 3 .161 .820 -7.923E-02
SCM Perf 4 .162 .693 .192
SCM Perf 1 .256 .691 .260
SCM Perf 7 .150 .424 .765
SCM Perf 5 .374 -.278 .658
SCM Perf 2 .148 .512 .649
Reliability(Cronbach α) 0.8509 0.7300 0.6416
Note: Principal component. Varimax rotation with Kaiser normalization.
TABLE 5. Composition of the factors and variables
Factor Variables Related studies
Success
factors
IT maturity
Asset specific investment Heide and John(1988),
Morgan and Hunt(1995),
Dyer et al.(1996), Heide(2003)
Opportunistic behavior Klein et al.(1990),
Stump and Heide(1996)
Communication Anderson and Narus(1990)
Morgan and Hunt(1995)
Ballou et al.(2000)
Collaboration Trust Anderson and Narus(1990)
Morgan and Hunt(1995)
Akintoye et al.(2000)
Smith et al.(1995),
Spekman et al.(2005)
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Satisfaction Anderson and Narus(1984)
Anderson and Narus(1990)
Morgan and Hunt(1995)
SCM
performance
Overall SCM performance
Efficiency
Speed
Effectiveness
Test of Hypotheses
Regression analyses were performed to determine the acceptance of the three hypotheses,
and the results are presented in Tables 6 through 9.
For Hypothesis 1, a multiple regression test was conducted to find out which of the four
variables representing success factors had significant impact on the inter-firm
collaboration level. Among the four variables, asset specific investment and
communication turned out to have significant impacts at α = 0.05 or α = 0.10 on the inter-
firm collaboration level respectively. Thus, two of the success factors are found to be
important for inter-firm collaboration, but IT maturity and opportunistic behavior do not
seem to affect inter-firm collaboration.
For Hypothesis 2, data were divided into two groups, that is, 1st-tier suppliers and 2nd-
tier suppliers, according to the firm’s relationship with the auto makers. Again, multiple
regression tests were conducted on the data to find out the relationship between the
success factors and the inter-firm collaboration level. None of the success factors turned
out to have significant impact on inter-firm collaboration for both 1st-tier and 2nd-tier
groups. Thus, it was not possible to determine whether important factors affecting inter-
firm collaboration are different between the first-level and the second-level supplier-buyer
relationships.
For Hypothesis 3, the result of the regression test showed that inter-firm collaboration
seemed to have a positive and significant impact on the SCM performance although the
significance level is very marginal with p-value = 0.1089. Thus, we can say that SCM
performance will improve as the level of inter-firm collaboration increases.
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TABLE 6. Collaboration vs. the success factors.
coefficient t p-value
IT maturity 0.0167 0.2803 0.7802
Asset specific investment 0.1857 2.0465 0.0453**
Opportunistic behavior -0.0912 -0.9730 0.3346
Communication 0.1961 1.8325 0.0720*
F = 2.865, p-value = 0.0311, r2 = 0.167, df = 61
* : p < 0.10, ** : p < 0.05
TABLE 7. 1st-level relationship: Collaboration vs. the success factors.
coefficient t p-value
IT maturity 0.0514 0.7516 0.4561
Asset specific investment 0.1570 1.4377 0.1574
Opportunistic behavior -0.0955 -0.8188 0.4172
Communication 0.1543 1.2266 0.2263
F = 1.3206, p-value = 0.2768, r2 = 0.0255, df = 49
TABLE 8. 2nd-level relationship: Collaboration vs. the success factors.
coefficient t p-value
IT maturity -0.1169 -0.8288 0.4345
Asset specific investment 0.2291 1.0832 0.3146
Opportunistic behavior -0.0327 -0.1472 0.8870
Communication 0.4412 1.4755 0.1835
F = 1.9421, p-value = 0.2082, r2 = 0.2551, df = 11
TABLE 9. SCM performance vs. Collaboration.
계수 t p-value
Collaboration 0.5325 1.6271 0.1089
F = 2.647, p-value = 0.1089, r2 = 0.026, df = 61
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Path analysis and test of Hypotheses
We used correlation test and regression analyses to find out the relationships among the
success factors, inter-firm collaboration and SCM performance, and the results are
presented in Figure 2. In this analysis, the inter-firm collaboration is defined as the sum of
the three variables of trust, satisfaction and communication. From the analyses, it seems
that IT maturity and asset specific investment affect the inter-firm collaboration level and
also has direct effect on the SCM performance as well while opportunistic behavior seems
to affect only asset specific investment. Inter-firm collaboration is also found to have a
direct influence on the SCM performance.
FIGURE 2. Path analysis.
CONCLUSION
In this paper, we attempted to identify the important factors affecting inter-firm
collaboration, and assessed the impact of inter-firm collaboration on the performance
of supply chain management. First, we found that asset specific investment and
communication were the two important factors that would have significant impact on
inter-firm collaboration. The result shows that the inter-firm collaboration level will
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increase when firms make investments that are designed to be used specifically for
their supplier and buyer firms and when firms are actively engaged in communication
with their suppliers and buyers. Second, inter-firm collaboration was found to have a
marginally significant impact on the SCM performance. Thus, the SCM performance
can be improved through the collaboration with the supplier and buyer firms in the
upstream or downstream of the supply chain.
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