House Speaker Michael Madigan made the motion to adjourn the chamber Monday just before 5 p.m.
Members had expected to vote on a last-ditch attempt by Gov. Pat Quinn to save the broken-down pension talks.
Quinn proposed setting up a commission that could recommend changes to bridge a $96 billion deficit in public-employee pension accounts. The commission's recommendations by April 30 would have taken effect unless the Legislature voted against them.
Top lawmakers feared the move would have been illegal.
A new General Assembly will be sworn in Wednesday.
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The bill is SB1673
Online: http://www.ilga.gov