It depends.
There are many factors that influence the cost of the workplace investigation. For instance, the type and nature of the allegations, number of parties involved and quantum of evidence to be collected and analysed.
Just like any service in the market, you get what you pay for. An outsourced agency with highly experienced practitioners and robust processes and techniques will charge more than a contractor fumbling their way through a process that could leave you with wide ranging ramifications.
This is not a risk worth taking and cost should not be the most important factor when selecting a provider to conduct your workplace investigation.
The potential cost of a poorly handled investigation far outweighs the cost of an investigation conducted properly and thoroughly.
We are constantly engaged to conduct investigations that were performed unsuccessfully in the first place by inexperienced providers.