Agreement covers about 900 shipbuilders at its shipyard facility.
Documents suggest the bill for 15 warships has ballooned to $40 billion from an original projection of $26 billion.
Irving Shipbuilding expects employment to swell to 2,500 workers once peak production is reached.
Program expected to cost $3.5 billion, up from an initially proposed $3.1 billion when the ships were announced in 2007.
Qing Quentin Huang works for a subcontractor to Irving Shipbuilding, which is building arctic patrol ships for the Canadian naval forces.
Vancouver’s Seaspan wins $8 billion worth of contracts; troubled Davie down but still not out