Nearly nine in 10 retired workers depend on Social Security benefits to make ends meet, but living on a fixed income is no easy task. Fortunately, the size of your Social Security check depends on two things -- lifetime earnings and the age at which you claim benefits -- both of which are in your control, at least to some extent.

Here are four ways future retirees and non-working spouses can maximize their Social Security retirement benefits.

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Source Fool.com