No dating policy
It's not good for the company, the manager, the employee, or the employee's coworkers. And this holds for employees who date managers in another department.
Managers who are dating or romantically involved with a subordinate is never a good idea.
When a workplace romance sours, it can expose the company to increased liability, since the connection between alleged actors is easier to establish--essentially giving the plaintiff some good ammunition for his or her case.
Relationships between supervisors and subordinates create even more potential problems.
When your routine is work-sleep-work, going out to date does not seem like a real option for many.
According to the Career Builder survey, some industries are more prone to inter-office dating than others.