Rauner released a statement Tuesday that it must prepare for the possibility there won't be a deal on spending by July 1.
Legislative Democrats approved a spending plan but acknowledge it's at least $3 billion short of revenue. Lawmakers left town at the end of their scheduled spring session Sunday but plan to return. The House will do so Thursday.
The Rauner administration says the Department of Juvenile Justice has 500 extra beds and officials will prepare to close as many as two facilities. A minimum-security prison work camp would be shuttered and state aircraft kept from flying except in emergencies.