Also included in Rauner's pension measure is Emanuel's approach to the city's police and fire pension shortfall that would allow the mayor to stretch out the payments needed to restore financial health to the systems. But it would require that the definition of catastrophic injury for public safety workers be changed to make it clear they can't hold outside jobs while receiving disability benefits — a move that could be opposed by the unions that already agreed to Emanuel's plan, which already has cleared the legislature as a stand-alone bill.