It's an advantage if a person has his/her Master's degree since It's a leverage against any other applicant. Normally some companies are really looking at the credentials of the applicant, they don't care how experienced you are but for example, you only finished a vocational course then most probably they'll pick with the one that got his/her Master's degree along with that is a very high expectation.
Well only selected companies, but I think it's not that essential. Since I knew some that aren't or don't even have a proper education are having a much better position than any of those graduates of the four-year courses. Though some of the companies don't care about what you finished instead they're basing it on their experiences.