If you manage people, disputes will show up at your door. The marketing VP protests that the budget cap you and your new finance VP proposed is hindering a research initiative you supported. Two young sales representatives are embroiled in a turf war. Your administrative assistant is upset because the HR director won’t approve the extra week of paid maternity leave you promised her. Fail to address such employee concerns and you’ve failed as a leader. But it can be difficult to know how to respond, especially when you have a stake in the problem.Sometimes third-party intervention can make matters worse.