Organizations can be viewed from a variety of perspectives. Accordingly, a large number of theoretical approaches were formulated in order to explain organizational structures, behaviours or strategies (Ashmos & Huber 1987, p. 607). Two attempts to classify these approaches have received considerable attention in the literature: One was presented by Burrell and Morgan in 1979 and the other by Astley and Van de Ven in 1983. Each of the two approaches yields four categories of organizational theoretical orientations.