A job fair will be held in downtown Mesa on Thursday, focusing on customer service, sales and administrative employment. About 22 employers are expected to participate in the fair, providing information on upcoming openings. They may interview on the spot. Attendees are encouraged to dress professionally and bring plenty of resumes. The fair is scheduled from 10 a.m. to 2 p.m. at the Main Library, 64 E. First St. It is sponsored by Mesa, Maricopa Workforce Connections and Maximum Arizona.