SEATTLE, WA (MyBellinghamNow.com) – Boeing says it has made a “best and final offer” to striking union machinists.

The company adds that the offer includes pay raises of 30% over four years, up from the rejected 25% raises.

It would also double the size of ratification bonuses to $6,000, and it would restore annual bonuses that the company had sought to replace with contributions to workers’ retirement accounts.

The new offer would not restore a traditional pension plan that Boeing eliminated about a decade ago.

Boeing also renewed a promise to build its next new airline plane in the Seattle area — if that project starts in the next four years.

The company said its offer was contingent on members of the International Association of Machinists and Aerospace Workers ratifying the contract by late Friday night.