The GCC are first and foremost Arab countries and the predominant population are not English speakers. If anything the main language of communication must be Arabic, English is for the expats and the educated and will never replace the official communication language of the Middle East.
Much like how it is Canada. There are2 official languages and as a Canadian I know as a fact that the majority of Canadians are not French speakers, the minority is. But since it is still one of the official languages of Canada then any government representatives must speak both languages. This is one of the main reasons why I was not able to land any position in the Canadian government. My french is (to my father's chagrin) terrible.
Similarly in the US there are states where the majority are not English speakers, like New Mexico, Arizona and some parts of Texas. So in those states government employees must be able to communicate in both English and Spanish. In some areas of Detroit they must speak English and Arabic because of the large population of Arabs in that area.
I hope that helps.
by
Muhammad Ilyas , Administrator and Security Officer , Kainat Welfare Organization
Arabic is not must for the aspirants to work in Gulf Countries.English is international language, that's why every company need a person who has full grip on English language. But, there are some institution where Arabic language is required as compulsory.
If your work provides for writing in Arabic, you must learn Arabic regularly. However, if verbal communication is enough, I don't think it would be difficult for you to communicate with people after some time. I suggest you start learning Arabic, as it will also help you read the holy Qura'n.