The prime minister has been urged to plug a gap in orders at the Swan Hunter Shipyard on the River Tyne.
Swan Hunter has enough work to last until 2006
Hundreds of jobs at the yard are at risk because of a lack of work between 2006 and 2008.
Yard bosses and unions have urged the government to bring forward work on a planned £2.9bn aircraft carrier scheme.
During prime minister's questions on Wednesday, Blyth Labour MP Ronnie Campbell, urged Tony Blair to intervene over the yard's impending jobs crisis.
Workers from Swan Hunter have already lobbied MPs at Westminster in an effort to win support.
The Ministry of Defence says it plans to go ahead with the aircraft carrier programme by 2008.
But union leaders and management claim a skills shortage could hit the yard if work does not begin before then.
Mr Campbell told the prime minister that at least 500 jobs had been lost at the yard recently.
He asked Mr Blair: "Is there anything you or your office can do to get these men to get orders at this shipyard and get them back to work."
But Mr Blair would not be pressed on whether the aircraft carrier order would be brought forward.
He added: "Anyone who is made redundant will be given full help to be able to retrain and find another job."
Workers at the yard believe many essential tradesmen may become redundant and move to new jobs elsewhere.
BAE Systems has been awarded the lead role in the aircraft carrier contract, but rival French firm Thales SA will be given all the design work.
The government expects the carriers to be built at BAE's Govan shipyard, VT Group PLC's facility at Portsmouth, Babcock BES' at Rosyth as well as at Swan Hunter on the Tyne.
Recent closures at AMEC and A and P Tyne in Wallsend have led to fears over the future of hundreds of further jobs at the Swan Hunter yard.
Shipyard boss Jaap Kroese claims the yard has enough work to keep it going until 2006.