I live in phoenix and just got hired at the phoenix location. When I did my POPA last week I did I wore jeans no holes and a nice shirt. Not business dress just nice. And for my HR I wore shorts and a nice shirt. For HR you are just dropping off you're paper work and getting a parking pass for orientation. You will have to dress up for your badge picture which is done on your orientation day. My oratation day is the 10th