Affair Occurring Inside of Work

If you are hiring a private investigator to try and catch your spouse having an affair inside of their workplace, you should really think it over before hiring someone. The largest issue is, is there any reasonable chance that the private investigator will be able to get you proof of the affair? Can we see inside the office where it might be happening from public domain? Can we wait outside the office somewhere to film them leaving together after hours or is it happening while others are inside the workplace? These types of concerns should be the primary focus of your thinking.