Origin: Latin suffix -al
Occupational has 2 different meanings across 1 category:
of or relating to the activity or business for which you are trained
"occupational hazard"
Of, belonging, or relating to an occupation (in any sense).
"The company offered a comprehensive occupational health checkup for all its employees."
In plain English: Occupational means something that has to do with your job or career.
"She took an occupational health course to learn about workplace safety."
Usage: Use occupational to describe anything related to a person's job, such as occupational hazards or an occupational therapist. Do not use it to mean "full of people," which is the literal meaning of occupied.
Occupational comes from the noun occupation combined with the suffix -al, which turns nouns into adjectives. This word entered English to describe anything related to a person's job or trade.