Domestic worker
In the early 18th century, even some musicians were servants and had to wear livery (uniform).  In 1717, when composer Johann Sebastian Bach said he wanted to leave his job, the duke he worked for put him in prison.  In the 19th century, there were many domestic workers in Europe or the United States, as well as in other countries.  In the early 20th century, new laws were made in Britain to protect domestic workers, and give them more rights.