What should a bartender never do while on the job?

A bartender should never drink alcohol while on the job because it compromises their ability to perform their duties effectively and responsibly. Bartenders are responsible for serving alcohol to patrons, and consuming alcohol themselves can lead to impaired judgment, reduced coordination, and a lack of professionalism. This not only creates a potential safety issue for both the bartender and the customers but also puts the establishment at risk of violating liquor laws and regulations. Maintaining a clear head is essential for providing excellent customer service, ensuring safety, and responsibly managing the bar environment.

The other options, while they can have considerations in certain contexts (such as when to engage with customers or how to manage the bar area), do not carry the same level of risk or fundamental violation of professional standards as drinking alcohol on the job does.