CHICAGO (AP) -- A union for Chicago Transit Authority drivers says the operator of the train that crashed at O'Hare International Airport worked 69 hours in the seven days before the accident.
Amalgamated Transit Union Local 308 President Robert Kelly said Friday that the operator's call-in status without a consistent work shift caused her to work "strange" hours, which was a factor in the crash.
The CTA disputed the number of hours the operator worked, putting it at 55 hours.
Kelly says the operator is "torn to pieces" over the crash. He says the union will fight the CTA if it seeks to fire her.
A federal investigator looking into Monday's crash in which 32 passengers were injured. The investigator says the operator acknowledged she dozed off before the accident.
The CTA also said in a statement Wednesday afternoon that it would move trip switches that stop trains traveling above the speed limit. The agency said it would put the switches farther back so they work earlier.
CTA officials say service between the Rosemont and O'Hare stations could be restored as early as this weekend.
The train derailed early Monday and skidded up an escalator at the station injuring more than 30 people.
The law firm of Corboy and Demetrio filed the lawsuit Tuesday afternoon in Cook County court. The plaintiff is 23-year-old Dalila Jefferson, a security officer on her way to work at the airport. Attorneys say she was getting off the first car of the train when she was "catapulted forward" as the car went up an escalator.
Attorneys say Jefferson broke her foot and suffered neck and back injuries. The lawsuit seeks more than $50,000 in damages.
A Chicago Transit Authority spokeswoman says the agency doesn't comment on pending litigation.
More than 30 passengers were injured in the derailment.
Amalgamated Transit Union Local 308 President Robert Kelly says the operator told him she had worked a lot of overtime recently and was "extremely tired."
The eight-car public transit train jumped the tracks early Monday, skidded across a platform and scaled an escalator leading to the airport. More than 30 people were injured.
The National Transportation Safety Board plans to interview the train operator, who was still hospitalized.
No one suffered life-threatening injuries.