Illinois department of unemployment insurance-what is considered misconduct on the job?

DEFINITION OF MISCONDUCT: Under Section 602A of the Illinois Unemployment Insurance Act, the definition of misconduct is: "the deliberate and willful violation of a reasonable rule or policy of the employing unit, governing the individual's behavior in performance of his work, provided such violation has harmed the employing unit or other employees or has been repeated by the individual despite a warning or other explicit instruction from the employing unit."