I totally disagree. The Employer contribution component of Social Security and perhaps other taxes was never the employee's. The employer sends it to the government on the employee's behalf.
The employee never had nor has possession or control of that money.
Without getting into a brawl over the fiscal solvency of SS (I am for complete privatization, btw. SS is the most immoral fiscal lie ever told by government, and they have told some doozies), lets just say that "theoretically" that money is in an account with your name on it, administered by the fed (they send me updates on how much I have in there, periodically......, thoughtful souls that they are). The same with the payroll taxes. You even get some of them back (sans interest) if you have them whitheld. If you are very low income, you get all of them back. It is like a huge interest free loan from the poor to the fed every year.
Anyway, the fact that I have never seen the moneys that Widgets, Inc pulls out of my check does not mean that I won't ask for it and allow the evil corporate greedy bastards to keep it for themselves. I will call my union rep and demand....... you know how the rest of the story goes.