Reference checks are your last chance to insure you are hiring the correct person for your organization.
The most important aspect of any reference check is not the questions – it’s choosing whom to contact.
Yes, whom you contact is actually more important than the questions you ask.
You can have the most rigorous process known to mankind, but it won’t help you one bit if you ask the wrong people.
The correct questions of course are those that dig in to the responsibilities and accomplishments need to achieve the results required in the role – those that flow out of the Interview Guide created for exactly that one position.