A store owner that holds its premises open to the public owes invitees a duty of care to keep the premises reasonably safe.  A business that owns or leases only part of a larger business premises owes invitees a duty of care with regard to the entire premises, not just the part the business owns, leases or operates in.  So, in this case, a company that Costco allowed into its store to demonstrate food items owed a duty of care with respect to the entire Costco premises even though the company operated in only a small area of the store and under its contract with Costco was responsible only for maintaining the area within 12 feet of its demonstration table.  Costco’s contract with the defendant could not relieve the defendant of its tort duty to third parties.  In this case, there was evidence that the defendant’s personnel were aware of a dangerous condition on the floor at the other end of the aisle on which the demonstration took place, but didn’t report that danger to Costco as they should have.  Breach of the duty of care thus raised a triable issue of fact.