AP: For those who fear an overcrowded planet, this is good news. For the economy, not so good.
We tend to think economic growth comes from working harder and smarter. But economists attribute up to a third of it to more people joining the workforce each year than leaving it. The result is more producing, earning and spending.
Now this secret fuel of the economy, rarely missing and little noticed, is running out.
"For the first time since World War II, we're no longer getting a tailwind," says Russ Koesterich, chief investment strategist at Blackrock, the world's largest money manager. "You're going to create fewer jobs. … All else equal, wage growth will be slower."
Births are falling in China, Japan, the United States, Germany, Italy and nearly all other European countries. Studies have shown that births drop when unemployment rises, such as during the Great Depression of the 1930s. Birth rates have fallen the most in some regions that were hardest hit by the financial crisis.
In the United States, three-quarters of people surveyed by Gallup last year said the main reason couples weren't having more children was a lack of money or fear of the economy.
The trend emerges as a key gauge of future economic health — the growth in the pool of potential workers, ages 20-64 — is signaling trouble ahead. This labor pool had expanded for decades, thanks to the vast generation of baby boomers. Now the boomers are retiring, and there are barely enough new workers to replace them, let alone add to their numbers.
