Kmart Corp. is being sued for illegal harassment at its far north suburban Zion store. The class-action suit was flied Jan. 29 by the U.S. Equal Employment Opportunity Commission on behalf of Francisco Gomez, a former Kmart employee. It accuses Kmart of unlawful employment practices, including harassing Latino workers and subjecting them to a "hostile work environment." According to the agency, Gomez and other workers were referred to as "dumb Mexicans" by their supervisor. The commission is seeking back pay and an undetermined amount of punitive damages for Gomez and other unnamed defendants.