The owner of a restaurant has the duty to keep its premises safe for customers and staff. For example, owners breach this duty when: they fail to keep the premises up to code, including entries and exits, fire escapes, flooring, etc.; they take too long to remedy a hazard (such as a spill or a leak) that they have - or should have had - actual or constructive notice of; they hire unqualified staff (negligent hiring); they use broken or unstable furniture (chairs, tables, bar stools, etc.); they fail to kick out customers who are exhibiting dangerous behavior (and are therefore a danger to fellow customers). Restaurant owners are not obligated to warn against open and obvious risks. Owners are also not usually liable for the wrongful intentional (not negligent) actions of their staff.