OK. let's explain again.
#1; we are only guests here, and they want you to go back where you came from after employment.
#2; to acheive a descent retirement in your country(see #1), the employer should protect you against parts of FX fluctuations.
#3; right now, we get shafted on the inflation here AND against our home currency/retirement fund (most of us).
#4; if you come here on a short/medium term posting, you will most probably keep your pension from employer in home country, not us. Under that kind of contract, you get either paid partialy in home currency and local currency (not us) or a mechanism is in place to limit currency exposure (kind of contract given to an accountant/engineer going overseas for a year or two).
#5; what happens if pound/euro falls? You might have an edge for a little while, but never to the extent of the damage done to our bank accounts right now. Like every contract in the UAE, it's a oneway street.
#6; yes, FX is part of the risk of taking an expat job but right now our bosses are pocketing millions with that on our backs.