Need and Job satisfaction of Public employees in a Department in my country

The Department is consisted of 150 employees all over the country but only 40 questionnaires will be given in a specific region of this department.

Generate Hypothesis (only 2) based on previous literature / research findings)
Research design and strategy (epistemology / ontology, positivist / phenomenological)

Discuss on qualitative Vs quantitative and which one is selected and why)
Sample selection
Data collection
Analysis of questionnaire
Data analysis
Validity and Reliability
Ethical considerations