Japan’s 2021–22 Weak Yen: Income vs. Production

Overview

This series examines why Japan’s 2021–22 yen depreciation could increase income from Japanese-owned foreign affiliates without a broad factory boom at home. It follows network exposure, scarce parent support, and the export–affiliate split across firm evidence, national accounts, model benchmarks, and suggestive cross-country results, while separating short-run transmission from unsettled long-run reshoring.

Learning outcomes

In Japan’s 2021–22 episode, direct-investment income rose while the trade balance deteriorated.
Higher affiliate employment and dispatched workers indicate activity beyond yen translation, although profit estimates also contain valuation effects.
When parent support is scarce or costly, depreciation can shift organizational capacity toward affiliates and pressure domestic multinational production.
Affiliate-intensive networks channel more of the response into foreign income and less into domestic GDP; cross-country evidence is suggestive, not causal.

Keywords

JapanyendepreciationmultinationalsaffiliatesGDPGNIreshoringsupportdirect-investment income

Chapters

Japan’s 2021–22 Weak Yen: Why No Factory Boom?

Where production occurs—and where income accrues

14 min · Where production occurs—and where income accrues

14 min

Japan’s 2021–22 Yen Depreciation: Affiliate and Parent Effects

What linked surveys reveal about overseas and home responses

16 min · What linked surveys reveal about overseas and home responses

16 min

Japan’s 2021–22 Yen: Scarce Parent Support

Why affiliate growth can crowd domestic operations

12 min · Why affiliate growth can crowd domestic operations

12 min

Japan’s 2021–22 Yen: Exports or Affiliates?

How production and income enter national accounts

14 min · How production and income enter national accounts

14 min

Japan’s 2021–22 Yen: What the Evidence Supports

Causal limits and what 70 economies add

16 min · Causal limits and what 70 economies add

16 min

Japan’s 2021–22 Yen: Reshoring Isn’t Automatic

Why network structure determines where gains land

17 min · Why network structure determines where gains land

17 min

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Plans

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FAQ

Why didn’t Japan’s weak yen automatically bring factories home?

Japan’s weak yen did not automatically bring factories home because Japanese firms could serve foreign demand through existing affiliates, while scarce parent support could shift toward them.

How can Japan’s current account improve when its trade balance worsens?

Japan’s current account can improve when higher direct-investment income from foreign affiliates offsets a weaker trade balance; that income does not mean production moved to Japan.

What is the difference between GDP and GNI in Japan’s yen episode?

In Japan’s yen episode, GDP counts production inside Japan, while GNI includes income accruing to Japanese residents from foreign affiliates.

How certain is the evidence that a weak yen shifts activity abroad?

The Japanese firm evidence supports a conditional network-and-support mechanism, while cross-country evidence is suggestive because outward-FDI geography and exchange rates are not random.