The Alberta Court of Appeal has upheld an injunction that stops random drug and alcohol testing at Suncor Energy sites in the northeastern part of province.

A union that represents thousands of oilsands workers at Suncor Energy sites in Alberta has won a court injunction against random drug testing.

A judge hearing an application from a union for an injunction to stop Suncor from starting random drug tests at oilsands facilities in northeastern Alberta is to make his ruling next Thursday.