President Obama isn't even out of office yet and the Illinois legislature is considering a bill which would make August 4th (his birth date) a legal holiday. He would be the first ex-president to have this honor while still alive. Other past presidents from other states have had this type of recognition but it was done after their deaths. Truman in Missouri, LBJ in Texas.
The bill states that Aug. 4 would be a "legal holiday," defined as a day when state government offices shut down, and schools and businesses have the option of closing.
Current state holidays observed in Illinois are New Year's Day, Martin Luther King Jr. Day, Abraham Lincoln’s Birthday, Presidents Day, Memorial Day, Independence Day, Labor Day, Columbus Day, Election Day (in even numbered years), Veterans Day, Thanksgiving, the day after Thanksgiving and Christmas."