In the new handbook for "stores Non-exempt".....the "greeting" page has a letter from Naomi Cramer.
Look at pages 24,25, & 26. This tells about breaks and lunches. There are specific states with laws that mandate lunches & breaks. so, while some things are "Target policy" they are policy because it is the law.
In each store there should be a poster that is on one of the red boards that tells about the laws for your state....what the minimum wage is...what break policies are... if your state is an "at-will" work state....whom to contact if laws/rules are broken....these posters are required to be up in my state and I'm guessing that is true for many other states as well.
For specific information (if it is not posted anywhere) talk to you HR, call TMSC, contact the Integrity Hotline, get a new Handbook, or look in Workbench. All of these resources are easy to contact...and there's nothing to worry about when asking for this information from your HR. This information ought to be posted, so if it isn't HR will happily get you the information!