It is entirely based on their non-compete clauses in their employment contracts. If they are unsure if they are able to help on your project, have them ask HR t

It is entirely based on their non-compete clauses in their employment contracts. If they are unsure if they are able to help on your project, have them ask HR to clarify it for them. I know some employers pay for _all_ of their employees time.. Others are a bit more reasonable, and only prevent working on competing products.