What if your employee was secretly being paid by a competitor to sabotage your project. As you say, you could just judge the results of his work, but it can ta

What if your employee was secretly being paid by a competitor to sabotage your project. As you say, you could just judge the results of his work, but it can take a lot of time to judge the outcome of complex projects, and to separate deliberate failure from normal risky-project / try again next time failure. This is what's happening when oil companies pay-off people in power to sabotage environmental policy. It's really much more efficient if we can weed out the saboteurs from our teams.