John M. Fitzgerald and Brian C. Haussmann have been promoted to partner at Tabet DiVito & Rothstein LLC and Katherine M. O’Brien has joined the firm as an associate. 

Mr. Fitzgerald began working at the firm in 2006 and Mr. Haussmann started in 2008.  Their area of practice is in commercial litigation. 

Ms. O’Brien joined Tabet DiVito & Rothstein in November, after a Cook County Circuit Court clerkship with Stuart E. Palmer, who has since been appointed to the appellate court. Ms. O’Brien will concentrate her practice on commercial litigation.