Uh that's because democrats have friends and allow that to happen. The pensions are usually unions and yes they are robbed blind for a whole host of reason, but ask the democrats and unions bosses. MAdoff was a democrat and screwed tons of people.
REpublicans are for enforcing the law and PENALIZING people. Democrats rarely the first and NEVER The second.
For example:
Unions want Washington's help with pension funds - Washington Times
Nonunion workers and private companies could be forced into absorbing the financial liabilities of underfunded union pension plans,
thanks to pending health care mandates and an executive order that could be finalized this year, policy analysts and trade group representatives have concluded.
The SEIU, which has many of its members employed in health care, has been out front and
center in pushing for the legislative changes to the nation’s health care system that won congressional approval over the weekend and was signed by President Obama on Tuesday. The SEIU home page included a section titled “The Final Push for Health Care” that instructed union members to call and lobby elected officials.