If something has happened and you need to make a claim with your hire and reward insurer, we always advise you to submit a claim as soon after the incident as possible. They can then ask you any follow up questions to ease the progression of your claim.
Your provider may have their own SLA or Service Level Agreement, so it's really important you contact them as soon as possible.
It is also important to let us know if you have had an incident or accident while working. For more information, see here.