Keep the union informed. Do not undermine the union but do not confuse the union with the people. The Union most often has a different agenda than the business than the people or the business. The Union and the corporate attorneys survive on the conflict and automatically put them selves in the middle. We measure profit and value added per employee hour as macro measures but many micro measures are used also.
Measures guide actions and actions cause the attitudes.
Workers use management actions to determine what is important to the company and their own best interest. Therefore actions are the only effective way to communicate. Management measures guide actions observed by workers. If there is no trust then it must be built. If not, every move by management will be interpreted as trying to take advantage of us, the union members.