They charge you an admin fee for keeping your account with them post employement.
"If you are not employed by BNY Mellon, you pay Voya’s
$25 annual administrative fee. A portion of the fee is deducted from your account on a monthly basis. Specifically, a
monthly fee of $2.09 is deducted each March, June, September and December and $2.08 is deducted in each other
month on the last business day of the month."
Move it off to Vanguard, Fidelity or Schwab. Much better option then keeping it on Voya