Independence...?

This year, my 14 year old decided that he wanted a summer job, rather than going to camp like usual. I asked around on social media and a friend who is a business owner said that she could hire him for a few hours a week at her shop. My son was very excited, and I was happy for him, because I think having a job of some sort is good experience. My husband is taking a lot more to convince. He doesn’t like the idea of his son doing what he considers menial work (he’d be helping in a garden center) when we aren’t hurting for money. Both my son and I explained that he wants to try to earn his own money, so my husband offered to have him work for our business. I think it’s important to have varied experiences growing up, to learn independence, without too much from mom and dad. How do I convince my husband that they can learn to appreciate things if they have to earn money themselves, rather than just have everything given to them?