a slave
someone who works for a business
A person who owns another person is typically referred to as a "slave owner." This term is historically associated with systems of slavery, where one individual has legal or social control over another. In contemporary contexts, such practices are illegal and considered a violation of human rights.
A businessman.
What do you mean by this. Please specify your question.
The person can be called either businessaholic or businessminded person in my opinion.
A substitute is someone that does another persons job while they are gone.
A co-workerA employeeOr a person that works with you
Tech Person
Employee
someone who works for a business
hydrologist
moofer
A Chronogist
A mathematician
A BarMan
Railroader
An astronomer.