T.A.
I know there are some government funded summer youth employment programs, let me see...
http://www.phoenix.gov/phxwc/syep.html
here is some more info - it looks like it might be too late to apply:
http://arizona.jobing.com/blog_post.asp?post=17932
The Safeway on Val Vista & Southern employees a couple 14-year olds, you might want to check there.