Millions of retirees will receive their January Social Security checks, worth up to $4,873 per check for those who retire at 70 years old, in three days. Retirees who were born from the 1st through the 10th of their respective birth months will receive the regular monthly check for January from the Social Security Administration on Jan.

Advocates say the Social Security Fairness Act rights a decades-old disparity, though it will also put strain on Social Security Trust Funds, which face a looming insolvency crisis.

President Biden signed into law a measure that boosts Social Security payments for current and former public employees, affecting nearly 3 million people who receive pensions from their time as teachers,