Case Information
*1 Before F LAUM , K ANNE , and H AMILTON , Circuit Judges . K ANNE , Circuit Judge
. After Anthony Walker was involved in a physical altercation with another employee of Ingersoll Cu ing Tools, the company discharged him. He sued Inger- soll, alleging racial discrimination under Title VII and retalia- tory discharge under Illinois law. The district court granted summary judgment for Ingersoll on all claims. On appeal, Walker abandoned his Title VII racial discrimination claims. Because Walker did not identify evidence of a causal *2 connection between his termination and conduct protected by Illinois law, we a rm the district court’s grant of summary judgment.
I. B ACKGROUND
Anthony Walker has worked as a machinist at Ingersoll Cu ing Tools since October 2008. Ingersoll asserts that Walker has a history of con ict with coworkers. That appears to be largely undisputed by Walker, but the facts relevant for the present appeal involve an incident on October 21, 2014. On that day, Walker was listening and dancing to music while working at his machine. Another coworker, Todd Ra ff erty, told Walker to mute the radio. The parties dispute the severity of the confrontation. Walker alleges that he was physically as- saulted—by which he means he was bumped—and threat- ened with additional violence. Ingersoll questions whether physical contact or threats of violence occurred. But everyone acknowledges that Ra ff erty yelled at Walker to turn the music o ff , and then the two men engaged in a shouting match.
The unit supervisor, Daniel Thompson, separated the two men, calmed them down, and questioned them. Afterwards, Walker returned to work and Ra erty went home for the day. The two men worked without incident on October 22. On Oc- tober 23, Walker met with Thompson and another supervisor to discuss the incident. Walker asked Thompson to discipline Ra erty (perhaps by a mandatory leave of absence). It is un- clear whether Thompson directly refused to do so. But Walker was frustrated with the inaction by Ingersoll. Walker told Thompson that he no longer trusted or respected him because he had not disciplined Ra erty for the assault (and because of Walker’s perception that Thompson inadequately responded *3 to workplace disputes in the past). Walker also suggested that the con ict with Ra erty was a ff ecting his physical wellbeing.
The supervisors suspended Walker with pay while the company determined how to proceed. Accordingly, October 23, 2014, was Walker’s last day of work at Ingersoll.
On October 26, 2014, Thompson told his supervisor, Sco tt Tilton, that “I don’t see now how [Walker] can remain part of [the unit] any longer.” Thompson cited Walker’s admi tt ed dislike towards his coworkers and his disrespect towards his supervisor. Thompson and Tilton met on October 27 and de- cided to terminate Walker’s employment. They informed Ingersoll’s human resources manager by email the same day. She con rmed receipt of the email on October 28 and began the termination process.
On October 29—one day after Ingersoll had concluded that Walker would be red—Walker’s a orney informed the company that he intended to sue for discrimination and retal- iation unless Ingersoll brought him back to work. The same day, Walker reported the alleged physical assault by Ra erty to the local police department. The local prosecutor ultimately declined to bring charges. Ingersoll formally terminated Walker’s employment on November 18, 2014.
II. A NALYSIS
During oral argument, Walker withdrew his Title VII claims of discrimination and retaliation. He did not expressly withdraw his claim of Illinois Worker’s Compensation Act re- taliation. But Walker did not mention that claim during oral argument or in his opening brief (Walker declined to le a re- ply brief). Thus, Walker waived any challenge to the district court’s judgment on that claim. Pu er v. Allstate Ins. Co. , 675 *4 F.3d 709, 718 (7th Cir. 2012). The sole remaining issue, then, is whether the district court properly granted summary judg- ment on Walker’s claim that Ingersoll red him for reporting a crime. We review the district court’s summary judgment de- cision de novo and draw all reasonable inferences in Walker’s favor. Burri v. Ditlefsen , 807 F.3d 239, 248 (7th Cir. 2015).
Walker rst argues that, upon granting judgment on his federal claims, the district court should have relinquished ju- risdiction over his state law claims. That argument rests on a misapprehension of how federal supplemental jurisdiction works. If a district court possesses original jurisdiction over one claim, 28 U.S.C. § 1367(a) permits that court to also exer- cise supplemental jurisdiction over any claim that is “so re- lated to claims in the action within such original jurisdiction that they form part of the same case or controversy.” If the district court dismisses the federal claims on any basis other than for lack of jurisdiction, the court has discretion regarding whether to maintain supplemental jurisdiction over the state law claims. Hansen v. Bd. of Tr. of Hamilton Se. Sch. Corp. , 551 F.3d 599, 607 (7th Cir. 2008). Here, the district court did not dismiss the federal claims for lack of jurisdiction. And there was no abuse of discretion in the district court’s decision to resolve the state law retaliation claims on the merits.
We turn now to those merits. Under Illinois law, a plainti may sue for retaliatory discharge if “(1) the employer dis- charged the employee, (2) in retaliation for the employee ʹ s ac- tivities, and (3) that the discharge violates a clear mandate of public policy.” Turner v. Mem’l Med. Ctr. , 911 N.E.2d 369, 374 (Ill. 2009).
Walker’s claim fails on the second element. “The require- ment that the discharge be in retaliation for plainti ffʹ s *5 activities requires that a plainti establish a causal relation- ship between the employee’s activities and the discharge.” Michael v. Precision All. Grp., LLC , 2014 IL 117376, ¶ 31. And, to prove causality, the plainti must show “more than a se- quential connection.” Roger v. Yellow Freight Sys., Inc. , 21 F.3d 146, 149 (7th Cir. 1994). Rather, the plainti has the burden of “a ffi rmatively show[ing] that the discharge was primarily in retaliation for his exercise of a protected right.” Id.
Ingersoll made the decision to discharge Walker on Octo- ber 27; Walker fi led his police report on October 29. He makes no a empt to undermine or question the company’s evidence regarding when it decided to terminate his employment. Walker thus cannot show even a sequential connection be- tween reporting the alleged crime and his discharge.
Undeterred, Walker argues that the protected conduct was his reporting of the incident to Ingersoll, not his police report. Walker cites no authority to support his assertion that Illinois has articulated a clear public policy mandate against ring an employee who was involved in a workplace dispute. It would be di cult to square such a conclusion with the “general rule that an ‘at-will’ employment is terminable at any time for any or no cause.” Palmateer v. Int’l Harvester Co. , 421 N.E.2d 876, 878 (Ill. 1981). It’s true that Walker now emphasizes that the dispute involved a “bump.” But he does not identify any evi- dence which suggests that his complaints to Ingersoll focused on the physical contact speci cally or alleged that a crime oc- curred. And, regardless, Walker hasn’t pointed us to support for the idea that Illinois has established a clear public policy against ring an employee who was bumped during a shout- ing match with a coworker. We are deeply skeptical.
Even assuming that Walker has identi fi ed protected con- duct, this alternative theory still fails to satisfy the causality element. There is a sequential connection between the alterca- tion and Walker’s discharge. But Walker has not provided ev- idence a rmatively showing that Ingersoll fi red him because he accused Ra erty of assault. The company asserts that it red Walker because of his history of workplace con ict and his stated distrust and disrespect for his coworkers and su- pervisor. When a worker is red for “impugn[ing] the com- pany’s integrity,” the discharge does not violate public policy. Palmateer , 421 N.E.2d at 879 (citing Abrisz v. Pulley Freight Lines, Inc. , 270 N.W.2d 454, 456 (Iowa 1978)). Walker falls short of identifying a material issue of fact on the causality element of his state law retaliation claim. The district court properly granted judgment for Ingersoll.
III. C ONCLUSION
Walker waived his challenge to the district court’s judg- ment on his Title VII and Illinois Worker’s Compensation Act claims. Regarding the remaining claim, Walker simply failed to support his allegation that he was red for reporting a crime.
AFFIRMED.