Have an Answer?
The first question you have to ask yourself is - what do you want to get a master's degree in.?Then the next question would be - how does it improve your career prospects? In terms of an increase in salary, increase in responsibility/title, job security going forward.
And then the last question is - how do you pay for it?
Most companies favor higher education if it is related to your work profile and will benefit the company. As such they can (and often do) sponsor higher education. I would recommend speaking with your boss/HR at work to know if your company can sponsor your graduate education or allow you time off work to get your degree. They can also provide insight into what fields of study may directly benefit you.