NSF
http://www.nsf.gov/pubs/2009/nsf09038/nsf09038.jsp#wtba

7.Will there be any restrictions on no-cost extensions for awards made with Recovery Act funds?
The NSF Director has made a commitment to follow established Foundation policies and procedures for submission, merit review and award of proposals funded under the Recovery Act.  As such, standard NSF policies and procedures will be utilized in the processing and approval of no-cost extensions.

NIH
http://grants.nih.gov/recovery/faqs_recovery.html
Hope this helps.

Sharon D. Smith

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