This is interesting. 10% raises are unheard of in tech, even when getting promoted into a new role. In fact, I’ve generally seen 3% as the norm across FAANGs unless someone (or their division) is either highly overachieving or underachieving.
That said, retail folks are not tech workers and minimum wage in the US is anything but. For reference, McDonalds was offering $25,000 sign-on bonuses post Hurricane Katrina so there’s clearly room for growth. These folks are generally undervalued and underpaid, but salary is only one component of their total compensation. How does their whole package look (e.g., health benefits, education benefits, employee discounts, paid time off, etc.)? Is it equitable and competitive?