Why do most people leave their companies? Salary, benefits and upward mobility all play a part, of course, but the reason many great employees seek opportunity elsewhere is that they are not working for great leaders. A great leader treats every employee like a valued partner in the business’ success. You can do this by following four simple rules that help your employees feel more invested in your company. First up: include your employees in big decisions by communicating information well and by giving them influence over decisions whenever possible. Ask for input on employee surveys, then follow-through on feedback in a concrete way. Or, create a culture where authority to make decisions is shared as far down in the company as possible. Do whatever works for your firm, so long as it is tangible and meangingful for the people who work there.