the blocs leaders this week seized control of the Brexit timetable from May to avert a chaotic departure on March 29 that would be disruptive for the worlds biggest trading bloc and deeply damaging for Britain.

Kotlikoff told CBS MoneyWatch.Some of the pitfalls are detailed in a new book.

leading to costly mistakes that can be difficult to impossible to fix.Taking an actuarial calculation is completely irrelevant to any one person.With 1 million people overpaid every year and about 70 million Social Security recipients.

But some people over 60 might make different decisions about working if they were aware of this issue.This happens when Social Securityoverpays beneficiaries.

for their benefits to be adjusted when they hit 67.

He also recommends that people check their Social Security history to make sure that the agency has your correct earnings history in their files.That risks the person losing out on thousands of higher benefits they would have received if they waited until full retirement age.

they can file for Social Security payments based on their spouses earnings.or about five years before the full retirement age for most people.

Theres a lot at stake in improving the system.with no guarantee that it will be resolved in your favor.