Since no one else has responded, I’ll respond although I am the parent of 2019 graduate with a BA in Economics. So I’m sure there are more knowledgeable posters who can weigh in. But generally my understanding is that there are two kinds of masters degrees that econ majors might pursue. One is the typical terminal masters like an MBA and the other is a MA after completing your BA degree that is additional study toward an eventual PhD. But from what I can tell, the sort of intermediate masters is a step often taken when someone’s undergrad work (especially in math) is not sufficient to get into the desired Economics PhD program. If you’re sufficiently prepared when you get your BA, you can apply directly to PhD programs. I’m not sure how helpful it is to get an MA in Econ and stop there in terms of career prospects, especially since such programs are typically expensive whereas PhD programs are hopefully funded. I would assume that an MBA by contrast can be a useful credential on a career track.
Here are some links with good resources:
https://www.aeaweb.org/resources/students/grad-prep/overview
http://gregmankiw.blogspot.com/2006/05/advice-for-aspiring-economists.html