End of hardship suspension period

[Guest Achilles]

Is there any IRS rule, or language in a plan document that states how to handle when a suspension period is about to end - meaning, if a participant was actively contributing prior to the dist., is it an automatic to start taking deductions again without notifying the participant?

I know that if participants want to stop participating, they must submit a form stating they want to cease contributing. For a hardship, no form was signed by the participant.

I know it's better to just notify the participant in advance, but does any law require this?

Thanks in advance!