Fitch Ratings cut Chicago's bond ratings on Friday, citing the city's sluggish economy and its inability to find a solution to its union pension obligations.

The credit ratings agency said it downgraded $8 billion in Chicago's unlimited tax general obligation (ULTGO) bonds to A- from AA-. It also cut $497.3 million sales tax bonds to A- from AA-, and downgraded $200 million commercial paper notes, 2002 program series A (tax exempt) and B (taxable) to BBB from A.