Question:
I'm having a few persons as contractors fixing my home. One is a Jew who might not be kosher. Can I offer him or the group money for lunch knowing that he might use it for non kosher food?
Answer:
It is permitted or you to give the workers money and it isn’t lifnei iver. This is because the worker has the choice to buy either kosher or non-kosher food, your giving him the money is not causing him to buy non-kosher, as this is something that he will decide to do after you give him the money.
Best wishes