Mystery Unlocked: How to Navigate Social Security's Tricky Earnings-Test Limits
Once you turn 62, you're allowed to sign up for Social Security at any time. However, you can't claim your full monthly benefit based on your personal wage history until you reach full retirement age (FRA).
FRA depends on your year of birth. If you're not exactly sure what your FRA is, you can consult this table to find out.
Year of Birth
Source Fool.com