Khalid is a part-time Teacher who joined IKNS school at the beginning of the 2020 taxable year. At the end of the year the following information provided: Khalid is involved in some administration works in addition to his teaching load and he received a fixed rate of payment each month. Any extra hours he works the school paid him overtime. All the work performed by Khalid is controlled by his direct supervisor Mr.Ali. Khalid doesn't have the right to accept or reject any tasks assigned to him. All the courses and administrative work must be conducted inside the school. Question: From a taxation point of view, what is the best category you will choose to categorize Khalid in, Self-employment or employment? and why