Enlarge / Boeing Factory workers assemble Boeing 787 airliners at the Boeing factory in Everett, WA. (credit: Vince Streano | The Image Bank Unreleased)

Boeing is hoping to avoid a strike Friday with a tentative deal reached Sunday with the Machinists union representing 33,000 of its West Coast employees fighting for better wages and working conditions.

If Boeing employees agree to the deal in a vote Thursday, their new contract will provide the "largest-ever general wage increase" in the company's history, Boeing Commercial Airplanes president and CEO Stephanie Pope said in a press release.

The potential deal guarantees that over the next four years, Boeing employees would receive a 25 percent pay raise, as well as "lower medical cost share to make healthcare more affordable, greater company contributions toward" retirement, and "improvements for a better work-life balance," Pope said.