Matters the situation and the employee. The situation is always different and the employees are at different levels in different areas. So my "style" for a new employee differs from that of my style with someone who has been with the company for a longer duration or who is more experienced.
MBO (Management by Objective) using milestones incentives, rewards.
Behavioral Management - People don't like change. If your changing and making something drastic according to what their used to, you need to show them how and why the change is going to be better for them as well as the company