Jackson submitted her resignation, effective Tuesday, to Mayor Rahm Emanuel, the Chicago Tribune reported.
"After much consideration and while dealing with very painful family health matters, I have met with my family and determined that the constituents of the 7th Ward, as well as you Mr. Mayor, and my colleagues in the City Council deserve a partner who can commit all of their energies to the business of the people," her resignation letter said. "Therefore, it is with a heavy heart that I tender my resignation as alderman of 7th Ward, effective [Tuesday]."
Jesse Jackson Jr., D-Ill., resigned from Congress before Thanksgiving amid a federal investigation into misuse of campaign funds and mental health issues. The former congressman has been diagnosed with bipolar disorder. He had been on medical leave from Congress since June.