Preliminary knowledge gained from the survey results were the starting point for the
inductive research phase. It was decided to use multiple cases to build on this
knowledge to generate further insights on agile and robust strategies employed by
companies in their supply chain.
A theoretical sampling approach was followed by choosing cases which were likely
to replicate or extend theoretical contributions to SCRM (Eisenhardt, 1989). A number
of six cases were sufficient to reach saturation of information, following recommended
criteria by Strauss and Corbin (1998). Literal and theoretical replication (Yin, 2009) was
achieved in four dimensions which were selected to produce similar or contrary results
due to case characteristics:
(1) “Industry” (electronics and vehicle production) was selected based on the
importance of both industries in Western Europe.
(2) “Supply chain position” (OEM and first tier).
(3) “Company size” (small, medium, and large) were distinguished to examine their
influence on generalization to the propositions.
(4) “Type of ownership” (privately owned and publicly owned) was chosen because
of the possible impact different legislation related to SCRM can have.