If inventory is waste and product lifetimes decline at a growing speed, a f
irm should be very cautious about having such inventories. Since JIT practi
ces originated in Japan, if zero inventory management is possible, one shou
ld find it in Japanese firms. In this paper, theoretical reflections are co
mpared with Japanese experiences from eight case studies. Although these fa
ctories strive for no inventory of inputs, work in process, and output, the
y have not reached this goal. For each of these types, other factors are re
levant: geographical and infrastructural factors for the inputs, technologi
cal reasons for work in process, and market and technological factors for o
utput prevent firms from being successful in this respect. So zero inventor
y management is, at least for the time being, a fiction, but western factor
ies can, nonetheless, learn a lot from the step-by-step improvements in Jap
an in this field. (C) 1999 Elsevier Science B.V. All rights reserved.