Japan’s ringi system requires step‑by‑step hierarchical approval, slowing decisions and reinforcing formalism over practical ability. Shifting to simple email-based approvals can improve speed, reduce unnecessary rituals, and strengthen organizational competitiveness.

Many companies misjudge investment feasibility by relying on Gross Margin, which includes fixed costs and distorts returns. This article explains why Contribution Margin—based only on variable costs—is the correct metric for evaluating capacity expansion and efficiency‑improvement investments.