What happens if I do not submit a Mandatory Reconsideration within one month?

In light of nj's case: https://respectfulbenefits.forumotion.com/t3349p25-jsa-sanction-and-conversion-to-uc#8898

I thought this information would be helpful to others:

Is there a time limit for me to ask for a mandatory reconsideration?

It’s important to ask for a mandatory reconsideration as soon as possible, as there is a one month time limit for challenging a benefit decision. The deadline for you to request a reconsideration should be on your decision letter.

If you have asked for a written statement of reasons for the decision, the 1 month time limit can be extended by 14 days.

The decision-maker may accept a late application (within 13 months of the date that you received the original decision) if there is a good reason for doing so. This may be because there is a lot of money at stake, you have a particularly strong case, or there is a good reason why it was late, such as illness or bereavement.

If they refuse to accept a late application within the 13 months, they should send you a Mandatory Reconsideration Notification with details of your appeal rights. You can then lodge an appeal against the original decision with the independent tribunal.

https://www.ageuk.org.uk/information-advice/money-legal/benefits-entitlements/how-to-challenge-a-benefit-decision/

Non Deficere