I work for an auto parts chain and during the winter months when business is slowed down the boss tells us that we are not allowed to take lunch breaks. He tells us that without a certain ammount of business that he can't justify having another person come in and relive us so we can take a lunch break. On a Sunday that is a 10 hour shift with no lunch. He says that our break is considered to be in between customers which is too unpredictable, and alot of times there aren't breaks in between customers all day. But during times when customers aren't in there we are expected to do things such as put freight away and other duties. What can we as employees do legally to get a lunch break.... is there any action we can take to stop this.......

Neither Federal nor Iowa law requires that you be given a lunch break. While I don't approve of employers making an employee work a full shift without one, there are no laws being violated and thus no legal action you can take to force the issue.

Get another job?

Jessie, this post is over a month old. Around here we request that you not respond to dormant posts unless you either have a question about the law being discussed or are the OP coming back with an update.