Its all to common to focus on compliance and regulations when you onboard a contractor for a project or an assignment. Take a copy of their passport, utility bills, take copy of their insurances and ensure you have complete their right to Work Checks.
You store these on your shared drive, in a personnel file and they get tucked away and never to be looked at again. Their passport expires and is renewed, their liability insurance runs out and not to be taken up, their travel insurance runs out and they need to go on a business trip.
We know the complexity of running a business with hundreds of contractors and the limitations of a well structured Excel tracker.