Are you preparing for IELTS or TOEFL? You should include the purpose of your essay next time. Besides, your essay is irrelevant to the incomplete topic you posted. It would be better if you could provide us with the full prompt.
specific policy on hiring a new employee
specific recruitment policy
all employer
all employers
both education and other qualifications
academic background
If proper education combined with other qualifications make the person more valuable.
This is an incomplete sentence.
So single certificate or experience without proper education each has its positives and negatives
This sentence is not coherent with your previous sentences.