CHICAGO (CBS) — Gov. Pat Quinn has signed into law pension reforms aimed at fixing some loopholes in the system.

The law takes effect immediately. It aims to end the practice of so-called double dipping for public employees.

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In some cases, employees took leaves to work for their unions but continued to build benefits in government pension systems based on union pay.

The law also closes a loophole made possible by a 2007 law that allowed two lobbyists for the Illinois Federation of Teachers to qualify for teachers’ retirement benefits by spending a single day teaching.

Quinn signed the bill Thursday.

Illinois House Republican Leader Tom Cross was a sponsor of the bill. He says the law means that pension abuses can’t run rampant.

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The law doesn’t address Illinois’ grossly underfunded pension system.

For that reason, watchdogs say the law doesn’t go far enough.

“It will leave that state of Illinois with $85 billion in unfunded promises,” said Laurence Msall, president of the Civic Federation. “It does not address the elephant in the living room for the state of Illinois: How are we going to fund this pension program and keep it from becoming insolvent?”

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