I had quite a few shares in my previous employer's business. Not enough to make any difference to the company what I did with them but I had about about £10,000 worth. Huge global company. I wouldnt say that they motivated me in any way, workwise. They just sat their in the background to the point that I pretty much forgot about them on a day to day basis. I had full employee rights. Neither stopped them from laying me off after 30 years.