In this paper, I focus on the internal establishment process of amoeba management, and examines how management accounting literacy of middle and lower managers, which is necessary for amoeba management, could be constructed. I found that (1) hourly profitability calculation in amoeba management is not introduced from outside by consultant, but constructed by internal managers, (2) active managers’ participations with assigned tasks in calculation rule settings are important, and (3) managers could understand the association of operations and accounting through the participation. Moreover, planning capability which is critical in amoeba management was grown in OJT. In this process, intentionally limited functionality of information system of amoeba management, which does not have automatic calculation, encouraged interdepartmental communications and enabled the plans by managers to be the plan with intentions and thoughts, not forecast.
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