The owner or manager of a business open to the public owes the highest duty of care to keep visitors safe.
Legally, this duty includes:
Regularly inspecting the property for any hazards that might injure people
Promptly remedying any hazards
Warning people of the hazards if they cannot immediately fix them
For example, suppose that a property owner finds a large hole in the floor of their store and cannot fix it right away or needs to call a contractor to help repair it. Until they have repaired the hole, the owner should take steps to adequately warn the public of the hole, such as by encircling the area with orange hazard cones and caution tape or posting prominent warning signs.