Boeing substantially raised its contract offer to the Machinists union Monday in an effort to end the strike that threatens to damage the company.

Boeing Co. offered a 30% pay bump directly to striking workers, bypassing furious union leaders as it tries to overcome a debilitating strike that has shut down its aircraft manufacturing across the Pacific Northwest.

Boeing upped its wage proposal to thousands of striking workers on Monday, offering a 30% general wage increase over four years in what it called its "best and final" offer as the strike drags on. The U.