Almost half of people in their early 20s have a secret, one they don’t usually share even with friends: Their parents help them pay the rent.

Moving into adulthood has never been easy, but America’s rapidly changing labor market is making it harder to find economic security at a young age. Skilled work is increasingly concentrated in high-rent metropolitan areas, so more young people are tapping into their parents’ bank accounts.

According to surveys that track young people through their first decade of adulthood, about 40 percent of 22-, 23- and 24-year-olds receive some financial assistance from their parents for living expenses. Among those who get help, the average amount is about $3,000 a year.

It’s a stark reminder that social and economic mobility continues past grade school, high school and even college. Economic advantages continue well into the opening chapters of adulthood, a time when young people are making big personal investments that typically lead to higher incomes but can be hard to pay for.