Gov. Chris Christie temporarily suspended Bergen County's so-called blue laws after County Executive Kathleen Donovan made the request.
Paramus believes the order applies only to stores that sell items that would help people recover from the storm. These include clothing, building supplies and furnishings.
Paramus Mayor Richard LaBarbiera said he suspects some may be using Sandy to chip away at "the one sacred thing that Paramus residents count on to give them some relief from the crush of shoppers."
The laws were enacted 60 years ago.
The court hearing will take place Friday.
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