In a thought-provoking address at the 2026 BOJ-IMES Conference, Bank of Japan Governor Kazuo Ueda offered a unique perspective on the ongoing Middle East conflict, framing it as Japan's fifth major oil shock. This isn't just another analysis of a global crisis; it's a deep dive into the country's economic history and a cautionary tale for policymakers worldwide. Ueda's insights are particularly fascinating because they highlight how the same oil price increase can have vastly different outcomes depending on the economic conditions at the time.
One thing that immediately stands out is the role of initial conditions. Ueda's analysis reveals that the key to whether a temporary oil shock becomes a persistent one lies in the initial state of wages, expectations, and exchange rates. In my opinion, this is a critical insight that many policymakers often overlook. A temporary shock can become permanent if these channels activate, while a large shock can remain contained if they do not. This raises a deeper question: How do we ensure that our policies are flexible enough to adapt to these changing conditions?
Ueda's comparison of Japan's responses to previous oil shocks is particularly insightful. The first oil shock of 1973, for instance, produced a wage-price spiral with inflation and wages both reaching 20-30%. This was partly because monetary tightening came too late and was insufficient. The second shock of 1979, on the other hand, was contained by a faster policy response, more restrained wage behavior, prior yen appreciation, and firms having learned from the first episode. The mid-2000s episode illustrated the opposite extreme, where Japan's deflationary equilibrium meant that even a substantial rise in oil and commodity prices could not break it.
What makes this particularly fascinating is the role of expectations. During the post-2021 episode, Japan shifted away from its deflationary equilibrium without producing a 1970s-style spiral. This was partly due to the broader shock spanning energy, food, and logistics, combined with yen depreciation, tighter labor markets, and shifting price norms. Medium to long-term inflation expectations have moved up to a 1.5-2% range, leaving less buffer than in previous episodes. This suggests that Japan is now in a regime where a cost shock carries materially more second-round risk than it did during the mid-2000s episode.
From my perspective, Ueda's analysis has significant implications for the BOJ's rate path. The central bank is watching wage growth, inflation expectations, and exchange rate dynamics as closely as the oil price itself. Any acceleration in spring wage negotiation outcomes or further yen weakness would tighten the BOJ's room to remain accommodative. This means that markets should read the speech as a governor carefully laying the analytical groundwork for a policy response that is data-dependent but not passive.
In conclusion, Ueda's address is a must-read for anyone interested in the intersection of oil shocks and economic policy. It offers a wealth of insights into the factors that determine whether a temporary shock becomes a persistent one. Personally, I think that this analysis has broader implications for global policymakers, who must now consider how to adapt their strategies to the changing economic landscape. The question of which inflation regime a country currently inhabits is, indeed, exactly the right one to be debating.
