Corvalan v. The Queen, 2006 DTC 2907, 2006 TCC 200 -- summary under Capital Loss v. Loss

The taxpayer, who worked as a mining engineer for a junior exploration company, realized losses on capital account when he sold shares of his employer that he had acquired earlier in the year on the exercise of employee stock options given that his trading activities were limited to the sale of shares of his employer over several years, and he did not have any education, training or certification in stock trading and there were no other "badges of trade".