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http://wiki.injuryboard.com/help-center/articles/property-owners-liability-safety-and-prevention.aspxProperty Owner Duties and Responsibilities
Property owners owe varying responsibilities, or duties, to those people who come to their property, depending on legal category of the person involved. The law acknowledges three main categories of people who may be on someone else’s property, they are: licensees, invitees and trespassers. The greatest duty is to those who are considered “invitees.” In the states that acknowledge these legal categories, the legal duties owed to each category can differ greatly. It is imperative to ask an attorney if these standards and categories apply within your state of residency.
Three Legal Categories Explained
Invitees -- An invitee is an individual who is invited onto the property by the possessor of the property, such as a member of the public, or one who's invited to the property for the purpose of business dealings. Under such standards, a property owner not only bares a duty to repair or correct any known dangers, he also bares the responsibility to inspect, discover and correct any hidden or unknown hazards on the areas of the premises which an invitee would typically have access.
Such obligations mean the property owner or possessor (a business that occupies the property) has a duty to take reasonable precautions to ensure the environment is safe for all visitors. While there is no exact way to measure what is deemed as reasonable, the law defines reasonable as what a person of ordinary judgment and intelligence would do in the same circumstance.
To better explain, we offer the following example: it may appear reasonable to expect a business owner to conduct inspections on a regular basis, or to maintain and clean stairwells on the property to make sure they are safe and free of hazards. In the reverse, it would be unreasonable to expect a business owner to keep watch all day long to make sure nothing is spilled on the stairs.