Baby boomers, millennials and Gen-Xers who don’t pay attention to the Oct. 19 business article “Future shock” will be in for a very rude awakening when they retire. Several points really caught my attention.

First, people who are covered by traditional defined-benefit plans should pay close attention to their plans’ funding. Many plans are underfunded because of below-average stock market returns and puny bond yields. This will affect the plans’ ability to make promised payments.

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Second, those who have not put together a budget are looking for trouble. While expenses such as commuting and apparel decline when you retire, others, such as medical costs and property taxes, usually increase. Creating a budget can identify unnecessary expenses that can be reallocated to retirement savings plan like a Roth IRA.

Third, those who are planning on Social Security funding the bulk of their retirement expenses kid themselves. The problems with the trust fund are well-documented, and in the current political environment, the notion of a bipartisan resolution seems highly remote.

Arthur M. Shatz, Oakland Gardens

Editor’s note: The writer was a corporate financial executive and administered pension and 401(k) plans.