You may see that a worker appears to you in a "Release" status or in red, and yet, when you access their documentation, everything is correct (in green).
It may also happen that the platform indicates that the employee has a few days of validity left and that he does not have any document that is about to expire.
In either of these two situations, what happens is that the worker has an upcoming or past leave date and you must modify it.
You can see it more clearly in this video.
To modify the employee's end date, you just have to go to the employee's file, clicking on the "Employee Detail" button:
And modify the End Date to a future date.