Bartender Girls

The high turnover of staff due to low wages and poor employee benefits results in a shortage of skilled bartenders. Whereas a career bartender would know drink recipes, serving techniques, alcohol contents, correct gas mixes, licensing law and often share cordial relationships with frequent customers (known as "regulars" in some parts of the world), short term staff lack these skill sets. Some pubs and bars prefer more experienced staff, although chains tend to accept inexperienced staff subsequent to in-house training.
United States
The Bureau of Labor Statistics maintains and publishes extensive data on occupations in the United States, including that of bartender. It publishes a detailed description of the bartender's typical duties and employment and earning statistics by those so employed.