https://www.kiplinger.com/article/retirement/t051-c000-s004-dividends-and-the-social-security-earnings-test.html
Dividends and the Social Security Earnings Test | Kiplinger
May 23, 2017 - For early claimers, some kinds of income can temporarily reduce your Social Security benefits.
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https://www.nber.org/papers/w26696
The Employment Effects of the Social Security Earnings Test | NBER
Founded in 1920, the NBER is a private, non-profit, non-partisan organization dedicated to conducting economic research and to disseminating research findings...
social security earnings testthe employmenteffectsnber