1) UN staff do not pay PAYE, they pay some thing called staff adjustment its normally 19%. People dont fill tax forms here. Expatriates are reimbursed for their VAT if they can prove. plus all those other duty free perks.
2) Most UN jobs are routine and boring esp. for General Service staff. I work in the UN and i regretted my move here. The money was not so good seeing as the private sector can give more and the job is a career killer. Basically once you are in the UN....you ain't going anywhere.
3) There is no glamour in the UN esp. for locally recruited staff. If you have an under graduate degree and above - work it out thea. if you don't...the UN is the place for you.
All Mushrooms are edible! Some Mushroom are only edible ONCE!