I left Kroger about a year ago and was rehired, but at the orientation I did not sign the union card that would allow them to take dues out of my check yet they are being removed. Was I grandfathered in to the union due to previously being in it when I left?
If your in the union you have to pay dues. The union is not free. You said that you were grandfathered in maybe that grandfather you into what you were paying before.