It all depends where your going, I know its crazy , but Dubai has separate categories and Sharjah has another set. Eg Dubai does not allow teachers , however if you fly on Air Arabia into Sharjah , they allow !!! In your case 'General Clerk' - unfortunately you do not fall anywhere. Your best bet is to arrange a visa either through a hotel, in Dubai, or if you are staying with a friend in Dubai , get in touch with a travel agent here, and they will sort you out.