The Long Wait: What Can Japan’s Lost Decades Teach Investors About Retirement Risk?
Shinagawa Station during peak office-hour travel
[Video: Crazy Morning Rush Hour in Shinagawa Station, Tokyo Japan [4K HDR] by Stepping Through Life on YouTube]
Introduction
There was always something mesmerising about standing in Tokyo’s Shinagawa Station during the morning rush hour.
Years ago, when work frequently brought me to Japan, I would sometimes arrive early — my corporate hotel was in the vicinity — just to sit quietly with a cup of coffee and observe the flow of humanity before the workday began. Streams of office workers and salarymen — grey suits, dark briefcases and polished shoes — moved through the station with near-military precision. From a distance, it resembled an army marching in unison.
Most appeared to be middle-aged men, shaped perhaps by decades of discipline, routine and loyalty to the Japanese corporate machine. Even today, the sight remains striking. During my recent visit to Japan last month, I once again found myself watching these crowds move steadily through Shinagawa Station, many likely on their way to work before sunrise or returning home after long office hours.
But this time, the scene stirred a deeper reflection about investing, retirement and the uncomfortable reality that financial downturns can last far longer than many people expect.
When Japan Seemed Unstoppable
In the late 1980s, Japan appeared unstoppable.
Its economy was admired around the world. Japanese corporations were dominant global names. Property prices soared. The stock market surged relentlessly. At its peak in December 1989, the Nikkei 225 index approached 39,000 points. Optimism was so widespread that many genuinely believed Japan’s economic ascent would continue indefinitely.
At one point, the Nikkei eventually lost more than 60 percent of its value from peak to trough.
For ordinary Japanese workers and investors, participating in the local stock market may not even have felt speculative. It likely felt rational. After all, why would one doubt the continued growth of what was then one of the world’s most powerful economies?
But financial markets have a habit of humbling even the strongest narratives.
And Then, the Bubble Burst!
When Japan’s asset bubble burst in the early 1990s, the collapse was not merely a short correction. What followed became one of the longest periods of economic stagnation in modern financial history. The Nikkei would spend more than three decades struggling to reclaim its former highs.
For younger investors, long downturns are painful but survivable. Time can often repair investment mistakes. Someone in their twenties or thirties may still have decades of work, income and savings ahead of them. Market declines can eventually be offset through continued investing and patience.
But the situation is very different for investors nearing retirement.
The crowds moving through Shinagawa Station today provoke an uncomfortable thought. Many of the men now making their daily commute may belong to the very generation that lived through Japan’s asset bubble. Some could have invested heavily into local equities during the euphoric years of the late 1980s, only to watch their portfolios collapse and stagnate for decades thereafter.
The Impact on Retirement Plans
For some, retirement plans may have been fundamentally altered.
Instead of benefiting from years of compounding growth during the later stages of their careers, they may have experienced shrinking portfolios and diminished financial security. Some may have delayed retirement. Others may have continued working far longer than they originally intended, not necessarily because they wanted to, but because their investments never fully recovered within the timeframe they needed.
This is one of the greatest but least appreciated risks in investing.
Financial markets are often discussed using averages and long-term charts. We are frequently reminded that “markets recover over time” and that investors should “stay invested for the long run.” While these statements are generally true, they often overlook one critical reality: investors do not have infinite time.
A market may eventually recover after decades, but an investor nearing retirement may not be able to wait patiently for history to repair itself.
This is known as sequence risk — the danger that poor market returns occur at the worst possible time, particularly just before or during retirement. A severe downturn early in retirement can permanently damage a portfolio because withdrawals continue while asset values remain depressed.
The lesson here is not that investing is bad. Far from it. Investing remains one of the most important tools for preserving and growing wealth over the long term, especially in a world where inflation steadily erodes the value of idle cash.
However, Japan’s experience serves as a reminder that investors must remain humble about markets.
Too often, people unconsciously assume that the future will resemble the recent past. If a market has performed strongly for years, many begin to believe that such performance is normal or even guaranteed. Entire generations can become conditioned to think that markets always recover quickly because that is what they personally experienced.
But history shows that prolonged downturns are entirely possible.
Concentration Risk and Diversification of Assets
More importantly, it reminds us that concentration risk can be dangerous. Investors who place excessive faith in a single market, country or asset class may unknowingly expose themselves to years — even decades — of stagnation.
This is why diversification matters.
Diversification is often described as boring because it rarely produces spectacular short-term results. But its true purpose is survival. By spreading investments across different countries, sectors and asset classes, investors reduce the risk of becoming overly dependent on the fortunes of a single market.
No country, no economy and no stock market remains dominant forever.
At various points in history, investors believed certain economies were unstoppable. Japan in the 1980s was one example. The United States during the dot-com era was another. More recently, investors have witnessed speculative enthusiasm surrounding cryptocurrencies, artificial intelligence-related stocks and other fast-rising themes.
Sometimes the optimism proves justified. Sometimes it does not.
The challenge is that nobody knows with certainty which outcome will occur in advance.
This uncertainty is precisely why retirement planning should not rely purely on aggressive market assumptions. It also explains why prudent financial planning involves more than simply maximising investment returns.
A sound retirement strategy should recognise that markets can disappoint for prolonged periods. It should include buffers, flexibility and risk management. This may involve maintaining adequate cash reserves, diversifying globally, reducing excessive leverage and ensuring that not all retirement security depends entirely on financial markets continuing to rise.
In many ways, retirement planning is not just about growing wealth. It is about protecting dignity, independence and peace of mind during later life.
As I sat once again in Shinagawa Station, waiting for a Japanese friend during my recent trip, watching the endless flow of commuters moving with quiet discipline through the station, I found myself wondering how many had once believed their financial futures were secure.
Perhaps some still are. Perhaps others endured years of disappointment that permanently altered their expectations of retirement.
The truth is we will never know their stories.
But Japan’s lost decades remain one of the clearest reminders that investment risk is not merely about temporary volatility. Sometimes, the real danger is time itself.
Because when a prolonged downturn collides with retirement, patience alone may no longer be enough.
Conclusion
Japan’s lost decades remind us that investing is not merely about optimism. It is also about preparation, humility and recognising that markets do not always move according to our personal timelines. It is important, for pre-retirees and retirees especially, to have a Plan B.
Retirement planning ultimately is not about chasing the highest possible return. It is about ensuring that a market cycle does not dictate the quality and dignity of one’s later years.
If you would like to explore how to build a more resilient retirement plan — one that is diversified, sustainable and designed to weather prolonged uncertainty — I would be happy to have a conversation with you.
Article by Leon Loh
Email: leon.loh@gen.com.sg
Written in May 2026
