Consider these scenariosfirst of all

1)your Employer has to agree to that.

2) you have to have been promoted to a different position which requires Masters Degree. You cannot use the experience of your current job to qualify for same position in the process of labor certification.

Bottom line: your haveing a Master's Degree now doesnt matter. You either have to land a job that requires a Masters Degree in a different company or have to get promoted to a job that requires a masters Degree in the same company..

thats my understanding.