That's according to Amalgamated Transit Union Local 308 president Robert Kelly. CTA riders have had a number of complaints about the new Ventra fare payment system.
Kelly says this newest issue happens on a daily basis.
"This is revenue that, if lost to the CTA and is not collected, that is going to affect the budget a year from now. It's going to create a problem," said Kelly.
A spokesperson for the CTA accused Kelly of "spreading misinformation and outright lies, without bothering to learn the facts."
The agency said the CTA is paid fully and immediately for all trips and that the company that operates Ventra is responsible for any negative card balances.