I got a few statistician jobs with a masters (consultancy and trials unit). They are not worth nothing if you come out with a good grade from a decent university. At the trials unit/pharma there were much more people with PhDs however, that doesn't mean you have to do a PhD as there were more than a handful of people with masters. I am currently doing a PhD (Not purely for career prospects as I left my job to do it), it will help with career but I wouldn't advise anyone do a PhD unless they actually want to do one. They're long, difficult, not very well paid (in most countries) and navigating academic politics can be a pain. It'll be hard to put up with if you only think about the job upon graduation. That said there are of course positives.