Boeing said Monday it made a “best and final offer” to striking union machinists that includes bigger raises and larger bonuses than a proposed contract that was overwhelmingly rejected.

The company said 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.

Boeing said average annual pay for machinists would rise from $75,608 to $111,155 at the end of the four-year contract.

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.

David Koenig, The Associated Press