We have a new employee who is also 1/2 owner in a gold mine in British Columbia. She recently told all employees that she was selling stock in the company @ 25 cents a share and the company was going public soon. Several employees bought modest amounts of stock. Does our company have any liability in this issue in case the stock does not pay off in the future? She made the announcement without permission from the owners.
Thank you.

From what you say the company had no interest in the stock and did not authorize her to offer it to the employees. I would, however, end the practice of soliciting buyers at work.