guider
someone who works for a business
A Lumberjack, if the person is cutting down trees they are called tree fellers
An entrepreneur.
a slave
An entrepreneur
A secretary writes letters for a manager.
A secretary
A person who constantly writes letters of complaint can be referred to as a chronic complainer or a serial complainer.
A person who writes newspaper articles is called a journalist or a reporter.
A person who writes lyrics is typically referred to as a lyricist or a songwriter.
An autobiographer writes a historical account of their own life, which is called an autobiography. When someone writes an account of someone's else's life, it is called a biography.
A person who writes comedy sketches is typically called a comedy writer or a sketch writer.
A person who writes newspaper articles is called a journalist or a reporter.
A poet is someone who writes poetry.
A person who writes nursery rhymes is generally referred to as a nursery rhyme writer or a children's poet.
Cartoonist
A person who writes a will is commonly referred to as the "testator."