By Abhijith Ganapavaram, Allison Lampert and Matt McKnight (Reuters) -Boeing shares rose 3% on Monday on hopes of an end to a crippling strike, although some analysts questioned whether a proposed labor contract unveiled over the weekend would muster enough support from the U.

Spirit AeroSystems Holdings Inc. will start furloughing workers later this month in response to the continuing strike at Boeing Co., the aerostructure supplier’s biggest customer.

As the Boeing Company (NYSE:BA) strike drags on, Spirit Aerosystems Holdings, Inc. (NYSE:SPR) faces tough choices ahead, including the looming threat of layoffs and extended furloughs. On Friday, Spirit Aerosystems announced employee furloughs in response to the ongoing strike by Boeing workers represented by the International Association of Machinists and Aerospace Workers,