Can employers use computers as the sole instrument to judge an individual's performance, reliability or conduct?

An employer is duty bound to notify an individual of any significant decision affecting him or her that has been taken solely on the basis of an automated computer system. He or she may respond in writing within 21 days asking the employer to reconsider the decision or to take a new decision other than on that basis. The employer must reply within 21 days specifying the steps that it will take to comply with the request.