The Chicago Police Department requires police officers to use their Blackberry devices to access work-related emails, phone calls, and messages while they are off-duty. In Allen v. City of Chicago,No. 10 C 3183 (N.D. Ill. Dec. 10, 2015), plaintiffs alleged that the department had an unwritten policy that police officers not be compensated for overtime involved in receiving and following up on these communications. The district court permitted the case to proceed to trial on a class (pattern and practice) basis. Post-trial, the court found for the department, finding plaintiffs had failed to prove the City maintained an unwritten policy to deny payment for compensable off-duty work. Rather, the City had made arrangements for police officers to seek overtime compensation for their Blackberry use. Some officers did so. While plaintiffs proved they performed off-duty work using their Blackberrys for which they were entitled to compensation, they failed to prove, as a matter of fact, that the class members were not properly compensated for their work. As a result, their class claim failed.