In January 2008, Leisz joined the group Works Progress Administration, a band composed of Leisz, Sean Watkins (guitar), his sister Sara Watkins (fiddle), Glen Phillips (guitar, vocals), Benmont Tench (piano), Luke Bulla (fiddle), Pete Thomas (drums), and Davey Faragher (bass).

Leisz played mandolin on the mid-2021 Bob Dylan recordings of "Blowin' in the Wind," "Masters of War," "The Times They Are A-Changin' (song)," "Simple Twist of Fate," "Gotta Serve Somebody," and "Not Dark Yet" produced by T-Bone Burnett and recorded and mixed by Michael Piersante for a one-time sale as Ionic Originals.

In 2010, Leisz was presented with a Lifetime Achievement Award for Instrumentalist by the Americana Music Association.

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