The Illinois Supreme Court will be asked to re-visit an opinion it just issued last week.
Illinois' biggest government labor union says state employees' salaries are at stake.
Thousands of AFSCME members are still waiting for pay raises their contract guaranteed back in 2011. It amounts to an average of 25-hundred dollars per employee.
The court's decision says if - and only if - legislators pass a law funding it can workers get that money.
AFSCME spokesman Anders Lindall says within the next few weeks, the union will take advantage of an option that allows it petition for a do-over ...
"If we can show that certain arguments were overlooked, or they were misapplied."
The case could also have ramifications for the current budget impasse, as government workers are being paid even though there's no law authorizing it.
Lindall says AFSCME's attorneys are preparing to respond in the event that becomes an issue in court.
The Attorney General's would only say last week's opinion is under review.