Normally it should be "will work". However, "retire" normally means to stop working (due to old age), so the sentence seems slightly contradictory. It may be possible if "retire" means "retire from her full-time job", and she will be doing a little business consultancy in retirement.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
AnonymousQuoteMay "will be working" be possible if "retire" means "retire from her full-time job"? Or not?The choice between "will work" and "will be working" is not directly related to this issue. Whichever you use, the question of whether it makes sense for her to continue working after she retires still exists. However, for other reasons of naturalness, "w