DeMaurice Smith explains to Mike & Mike why he believes the NFLPA has to maintain an aggressive stance against management in order to stay effective. (1:43)

NFL Players Association executive director DeMaurice Smith says he will tell potential free agents not to sign with the Chicago Bears should new Illinois Senate Bill 12 SA #2 pass.

The bill would adjust the Workers' Compensation Act as it applies to professional athletes, who potentially are entitled to a wage differential award. The new bill would look to eliminate those athletes from being eligible for wage differential awards after age 35.

The law currently allows players to get paid for the term of their natural life, which is set at 67 years old. Those wanting change contend pro athletes seldom play beyond age 35, so paying them until 67 because of injury is unfair and expensive.

"I will tell you from the bottom of my heart that this union will tell every potential free-agent player, if this bill passes, to not come to the Bears," Smith told 670 The Score in Chicago. "Because think about it: If you're a free-agent player and you have an opportunity to go play somewhere else where you can get lifetime medical for the injury you're going to have, isn't a smarter financial decision to go to a team where a bill like this hasn't passed?"

Smith told the Spiegel & Parkins Show on Friday that the bill is being pushed by the McCaskey family, which owns the Bears.

"We join the four other major professional Chicago teams in monitoring and supporting changes to the system that protect athletes' rights under the workers' compensation system while acknowledging athletes are not competing professionally until age 67," the Bears responded in a statement released to 670 The Score. "Nothing in the wage differential language under consideration impacts the right for any athlete to receive just compensation for partial or permanent injury, medical benefits or to file a claim itself."