I love this article from We Are THAT Family about teaching kids hard work. As a family business we think its important for us to teach our kids about hard work too. They help not only with a few age appropriate chores at home, but they also help at the shop. Its easy for them to sweep up the wood shavings, or help put business cards in the bags.
Check out the article here: http://wearethatfamily.com/2014/04/15-ways-to-teach-kids-how-to-work-hard/