Involvement is the free expression of ideas. These ideas come from the corporation and its managers. The employees are involved only because they want to make sure their grievances are heard and managers see this as a chance for the employees to blow off some steam. This is far from having a voice in the company. Their voice is heard when the employees go from involvement to participation.
Participation is when the employees have a chance to speak their minds and ideas.
They are more likely to take pride in their work and have company loyalty. Mike, Kathleen and I will try to show this theory more indepth.