A well-organised essay will have a clear definite structure. The organisation is dependent on clear and decisive decisions. The best option out of all the choices appears to be D.
Answer: Unfair treatment is treating workers unfairly or poorly.
Explanation:
unfair treatment means that your employer can dismiss you from work at any time for any reason, or no reason at all. This also means that your employer can take action against you and “harass” you in the genetic sense.