Apprentice in the context of "On-the-job training"

Historically, a master craftsman or master tradesman (sometimes called only master or grandmaster) was a member of a guild. The title survives as the highest professional qualification in craft industries.

In the European guild system, only masters and journeymen were allowed to be members of the guild. An aspiring master would have to pass through the career chain from apprentice to journeyman before he could be elected to become a master craftsman. He would then have to produce a sum of money and a masterpiece before he could actually join the guild. If the masterpiece was not accepted by the masters, he was prohibited to join the guild and possibly remained a journeyman for the rest of his life.

Jacob Perkins (July 9, 1766 – July 30, 1849) was an American inventor, mechanical engineer and physicist based in the United Kingdom. Born in Newburyport, Massachusetts, Perkins was apprenticed to a goldsmith. He soon made himself known with a variety of useful mechanical inventions and eventually had twenty-one American and nineteen English patents. Sometimes known as the father of the refrigerator. He was elected a Fellow of the American Academy of Arts and Sciences in 1813 and a member of the American Philosophical Society in 1819.

An atelier (French: [atəlje]) is the private workshop or studio of a professional artist in the fine or decorative arts or an architect, where a principal master and a number of assistants, students, and apprentices can work together producing fine art or visual art released under the master's name or supervision.

Ateliers were the standard vocational practice for European artists from the Middle Ages to the 19th century, and common elsewhere in the world. In medieval Europe this way of working and teaching was often enforced by local guild regulations, such as those of the painters' Guild of Saint Luke, and of other craft guilds. Apprentices usually began working on simple tasks when young, and after some years with increasing knowledge and expertise became journeymen, before possibly becoming masters themselves. This master-apprentice system was gradually replaced as the once powerful guilds declined, and the academy became a favored method of training. However, many professional artists continued using students and assistants as they had been in ateliers; sometimes the artist paid the student-assistants, while sometimes they paid the artist fees to learn.

William Goddard (October 10, 1740 – December 23, 1817) was an early American patriot, publisher, printer and postal inspector. Born in New London, Connecticut, Goddard lived through the American Revolution and American Revolutionary War, during which he opposed British rule of the colonies through his actions and publications. He was a major figure in the development of the colonial postal system, which became the U.S. Post Office after the American Revolution.

Goddard served as an apprentice printer under James Parker. In 1762, he became an early American publisher who later established four newspapers during the American colonial period, including the Pennsylvania Chronicle, Pennsylvania Gazette, and The Constitutional Courant,, which frequently gave voice to the various patriotic causes. As a printer and publisher Goddard was highly critical of the Stamp Act in 1765 and joined the Sons of Liberty to that end. For a short time he was also a postmaster of Providence, Rhode Island. Goddard's newspaper partnership with Benjamin Franklin in Philadelphia later played an important role in the development of a new postal system in the soon to be united colonies. Through his association with Franklin, who was then serving as postmaster of British North America in Philadelphia, Goddard played a major role in the introduction of new postal routes, reforms and other improvements to the colonial postal system, efforts which are often only attributed to Franklin.