This is not an answerable question.
Whether a master's degree is even worth it at all depends on the master's degree and what you intend to do with it.
I've personally never heard of a master's degree that you can get in to with just work experience, but I would assume that if there is one, then the kind of profession it's related to is one that values work experience as much as having a bachelor.
If I was an employer and I was looking for someone with a master's, that's all I would care about. In fact, if I was interviewing two people for a position that required a master's, and one of them had relevant work experience from before the master's and the other had no relevant work experience, just the master's. Obviously I will prefer the one with relevant work experience.