13.3 million people retire: The baby boomer gap arrives
7 Min. read time
In many engineering workshops, the most critical knowledge sits in just two or three chairs. The people who know why the old machine acts up in humidity-and which supplier actually delivers-are in their mid-fifties. Over the next fifteen years, they’ll retire, taking with them 13.3 million workers nationwide-nearly a third of today’s labour force. This isn’t a temporary dip; it’s demographics, and the numbers are already set in stone.
Key Takeaways
- Nearly a third will vanish by 2040: 13.3 million workers will reach retirement age in the next 15 years-around 30 percent of today’s labour force. The figure comes from the 2025 Microcensus; it’s not a projection with wiggle room.
- Successors are simply too few: The baby boomer generation forms the largest group in the workforce. Every younger cohort is smaller, and the gap can’t be closed mathematically-only mitigated.
- SMEs feel the pinch first: Weak employer branding, undocumented specialist knowledge, no staff buffer. Those who react only when the first employee leaves have already missed their window.
Related:Succession as a process: Why so many SMEs give up / What the wave of insolvencies demands of SMEs
The numbers have already been crunched
Germany’s Federal Statistical Office sorted the scale in June. Based on initial results from the 2025 Microcensus, around 13.3 million workers will reach the statutory retirement age by 2040. That’s roughly 30 percent of all those currently employed. Put another way: nearly a third of the people keeping the country running today will be out of the workforce in fifteen years.
The pressure isn’t evenly distributed. The younger baby boomers, aged 55 to 59, form the largest age group at 5.5 million workers, with 85 percent still employed. Right behind them are the 60- to 64-year-olds, numbering 4.5 million. These two blocks will exit the labour market almost simultaneously.
The real problem only becomes clear when you look at the next generation. The 25- to 34-year-olds account for 8.8 million workers, while the 35- to 44-year-olds number 9.9 million. These cohorts are more active in the workforce than ever, with employment rates nearing 89 percent. But they’re simply fewer in number than the generation leaving. Higher participation can’t compensate for fewer heads.
What is the demographic gap? The demographic gap describes the difference between workers retiring due to age and the younger cohorts replacing them. In Germany, it’s widening because the large baby boomer generation is retiring, and no cohort of equal size is following.
Why SMEs Feel the Impact First
Corporations have buffers. A dedicated employer brand, HR departments with pipeline thinking, multiple locations to choose from. The typical SME doesn’t. It has one location, one region, and a team that has grown together over years. This closeness is now becoming a risk because it’s hard to replace.
Then there’s the issue of knowledge. In many businesses, critical know-how isn’t documented-it’s in people’s heads. Someone who’s operated a machine for twenty years knows its quirks better than any manual. When that person leaves, the knowledge goes with them-unless it’s captured beforehand. A single departure can be managed. A wave of departures in the same shift? Not so much.
The timing is what makes it insidious. The gap doesn’t appear overnight-it seeps in over years. That makes it tempting to put off addressing it. But building successors, documenting processes, and automating routines all require lead time. That lead time is the real leverage, and it slips away if you wait.
Which Levers Actually Work
Let’s start with the hard truth: there’s no single lever that can replace 30 percent of your workforce. Recruitment alone won’t cut it because the talent pool is shrinking too. Automation hits its limits-you can’t automate every task meaningfully. What *does* help is a combination of measures, and the order in which you implement them determines whether they provide short-term relief or long-term stability.
Quick Wins for Immediate Relief
- Retain experienced staff with flexible models
- Automate routine tasks where quality won’t suffer
- Train career changers instead of waiting for the perfect candidate
- Cut processes that exist purely out of habit
Structural Solutions for Long-Term Stability
- Document critical knowledge before key employees leave
- Develop successors over years, not just when someone resigns
- Make training a leadership priority again
- Build an employer brand that resonates in your region
Automation and AI belong in the left column, not the right. They ease daily pressures, handle repetitive tasks, and boost productivity for smaller teams. But they can’t replace years of accumulated expertise, nor can they build customer relationships. Those who pitch them as the sole solution haven’t grasped the real gap. Those who use them wisely buy time for what truly matters in the long run.
Frequently Asked Questions
Where does the figure of 13.3 million come from?
It comes from the initial results of the 2025 microcensus, published by the Federal Statistical Office in June 2026. The figure refers to the working population expected to reach the statutory retirement age of 67 by 2040. The previous year’s calculation stood at 13.4 million.
Can immigration not bridge the gap?
Immigration softens the decline but doesn’t reverse it. To even partially offset the departure of 13.3 million workers, sustained high levels of well-integrated immigration would be required over many years. For individual businesses, this isn’t a reliable factor to plan around.
Why are small businesses hit harder than large corporations?
Small businesses have less staffing flexibility, often lack an employer brand, and rely heavily on knowledge held by individuals. When a key person leaves, their absence represents a larger share of the team, and finding a replacement is far more challenging than in a large company with an internal talent pipeline.
Can AI solve the skills shortage?
AI and automation ease the burden by taking over routine tasks and boosting productivity for smaller teams. However, they can’t replace hands-on experience or customer relationships. Realistically, they’re one important lever among many-not the sole solution.
When should a business start preparing?
Now-because effective measures take time. Documenting knowledge, developing successors, and automating processes can take years. Those who wait until key staff leave have already missed the window of opportunity.
Editor’s Picks
More from the MBF Media Network
Source header image: Pexels / Andrea Piacquadio (px:3846129)
Image source: Pexels / Andrea Piacquadio (px:3846129)
