The HX is a part of the efficiency drive to get the housing...

The HX is a part of the efficiency drive to get the housing built much quicker than current projections - given during the summer period they get less than 7 hours a day construction activity. As far as paying the workers more - ain't going to happen - you could use that same analogy the world around and you end up with the western country scenario of less than 3% growth or worse stagflation. The extra impetus on KSA to drive the economic transformation comes from the long term future decline in oil revenue given the diminishing value and need of oil in society.