The reason that governmental bodies in Israel follow the "rules" of the Orthodox and ultra-Orthodox is not because Israel is a Jewish state or because these are somehow necessary to maintain its Jewish identity. Rather, it is for a very pragmatic reason: Israel has a parliamentary governmental system and no political party in recent decades has held a majority in its own right. The party with the largest number of seats must go into coalition with others to establish a government, and the religious parties have shown that they are pretty much willing to ally with anyone as long as their particular interests are satisfied.