PA CareerLink Alle-Kiski is hosting a job fair from 10 a.m. to 1 p.m. Thursday at 1150 Fifth Ave. in New Kensington. Nine businesses representing a variety of fields will be on hand: Quality Life Services, Home InStead, KML Carpenters Apprenticeship and Training Fund, Whalen Exteriors, Filterbuy, U.S. Postal Service,