A job can mean "some work that has to be done", for example: there are jobs to be done in the house: washing up, mending things that are broken, etc.
A job can also mean: work that a person does to earn
money. The word "job" may be used when a person works for someone else "an
employer" who pays them for the work. For example, a
teacher's job is to teach
children or adults. A taxi driver's job is to drive people in a
taxi. A firefighter rescues people from burning buildings and puts out
dermatologist's job is to
diagnose and treat
International Labour Organization was established to make people's job conditions better. It became an organization of the
United Nations in 1946.