13/10/2026
An employee has been off sick for weeks, then says the original condition has improved but they now have a different illness or injury.
That does NOT automatically start a new period of sickness absence!
If the absence is CONTINUOUS, you don’t go back to self certification just because the reason has changed. If they’ve already been providing fit notes, they continue providing fit notes!
From the sick pay and documentation side, the fact that the condition has changed is largely IRRELEVANT!
Keep treating it as the same continuous absence rather than restarting the process.