Boeing IAM union members may see an end to a nearly 7-week strike after the union endorsed a sweetened deal offered by the airplane maker.Stephen Brashear/Getty ImagesBoeing union workers have been on strike for nearly 7 weeks due to a dispute on wage increases.The planemaker proposed a new deal that includes a 38% pay increase over 4 years, the union said.Union leaders said it is recommending workers to approve the deal on Monday.Boeing union leaders are endorsing a sweetened contract offered by the airplane maker, signaling an end to a nearly seven-week strike that put a halt to the company's manufacturing operations.The International Association of Machinists & Aerospace Workers, or IAM, said in a social media post on Thursday evening that Boeing had offered a new contract that includes a 38% raise over four years.