Jobs & Economy in Janesville

Janesville's economy carries a real, documented post-industrial story: recovering and diversifying since General Motors' 2008-2009 plant closure, with real, ongoing progress alongside a genuinely incomplete transition.

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A real, documented GM plant closure

GM operated its Janesville plant from 1919 until its 2008-2009 closure -- its oldest plant still running at the time -- a real, disclosed loss of up to 9,000 jobs and roughly half a billion dollars in labor income across Rock County.

Real, ongoing diversification efforts

The county-led Rock County 5.0 initiative helped attract SHINE Technologies, a genuine medical-isotope manufacturer, and a Dollar General distribution center backed by an $11.5 million incentive package.

Uneven recovery across the city

Janesville's northeast side has seen real, ongoing retail growth even as parts of the old south-side GM corridor lag behind -- this record discloses that unevenness honestly rather than smoothing it over.

Key takeaways

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Last reviewed: 2026-08-27. Independent research; not financial, tax, or legal advice -- confirm current figures with a local professional before making a decision.