I'm curious about what other 'houds think on this one. There is a speciality Italian supermarket that just opened up in my area. They do home made pastas, sauces, meats, etc. There is an omlete bar in the morning and a pasta bar in the afternoon, a full service deli, pastry area, bakery, prepared goods, etc etc.
None of these stations have tip jars for the people who are preparing food for you, but the people at the check out register DO have tip jars. I can't bring myself to tip someone for ringing me up. If I thought it was being split with everyone else who is actually preparing my food I might be more inclined; but even then I don't see tip jars at any other markets. Obviously, I should ask and find out what the deal with the tip jars are, but what are your thoughts about tipping at a grocery store?