The person who has information with respect to their case can submit it to the decision-maker. If it's urgent, then the information can certainly be sent by facsimile or by an e-mail attachment. There are ways to get information to a decision-maker at the last minute.
Now, if the decision has already been made, it may be too late, but the burden is on the individual, with the assistance of any counsel they engage, to ensure that the decision-maker is up to date with respect to their particular circumstances.