Wow this is an interesting (and long) thread.

I'm also interested to find out more as i have just joined the public sector.
I realise that on my contract there isnt any mention of any MX __ grade, but judging from what people have posted here i probably fall in MX12 range.
I was from pte sector, worked 4 years but i guess its irrelevant as the new job scope is totally different.
Where can i find more info about this pay scale used by ministries/stat boards?