It's rare for big-box stores like Sam's Club to be open on Christmas Eve, but some smaller stores in rural areas may choose to stay open to accommodate last-minute shoppers. Some states have laws requiring stores to pay employees time-and-a-half on holidays, so it's best to check with your local Sam's Club to see if they'll be open on Christmas Eve. Some stores may offer special hours or extended holiday shopping hours for their customers' convenience, but be sure to check with your local store for exact times.