Responsible service of alcohol involves refusing service of alcohol to customers who you believe have had too much to drink. Many incidents have occurred due to serving intoxicated patrons alcohol such as alcohol fuelled violence and other violent crimes.
 

Although it may be difficult to refuse someone alcohol especially because customers may become offended, it is your duty to do so. Intoxicated customers are usually overly sensitive and overly confident which makes them act out.
 

One of the major issues that we are facing at the moment is that of alcohol fuelled violence plaguing many of the entertainment districts across the country. Some of these violent incidents have resulted in the death of innocent people. Customers can exit your establishment and cause havoc outside or down the road. Customers may also cause a scene within your establishment, bringing down the reputation of the establishment and ultimately affecting business.
 

Tact is needed and you should always remain respectful and understanding. You may need to remove a patron from the bar if they refuse to accept your decision to stop serving them.  The best approach is to inform the customer beforehand that they will not be allowed more alcohol. One of the options available is to politely inform the customer that they will only be served one or two more in advance to prepare them for the cut off in drinks. Then you should inform other servers as well as any bouncers or security along with your manager that a particular patron is close to their limit. It is much easier for a customer to understand this news before they become too intoxicated.