20 Miss. Code R. § 101-300-303.00
A claim for waiting period credit or benefits must be filed by the Friday following the week being claimed, using methods prescribed by the Agency. An exception to this rule can be considered if the individual files their claim within fourteen (14) days of the week being filed, provided no availability issue exists.
If an individual is in a claim series and makes no attempt to file a continued claim for three (3) or more consecutive weeks, no claim for benefits will be allowed until the claim is reopened. A reopened claim is an additional claim without interim employment with a new effective date. The effective date of the reopened claim will be the Sunday prior to the date in which the individual attempted to file another claim.
The Agency will have the authority to deny benefits or waiting period credit for any week which is not properly filed within set guidelines.
20 Miss. Code. R. § 101-300-303.00