Answer:
Among the given choices one that does not belong to the group of jobs is:
 Stock. 
Explanation:
Each of the given options i.e.
Secretary , Clerk, Accountant , Driver , Receptionist are a group of people that are assigned a particular job in there respective sector.
Stock is a type of a security that is been provided to the stack holders of a company regarding there share in a company.
Stocks are also known as equities.
  Hence, the answer is:
 Stock.