Dubai ATS- et al
There is some philosophy here to consider.
Dubai Airports makes money by passengers and aircraft going through their airport and in the former case spending as much as possible, the latter is a fixed charge of course. In order to get a large passenger throughput it is necessary to get as many aircraft in and out as possible and maybe just delay the outgoing passengers long enough to part with a little additional cash. The ATS organisation is a financial overhead for Dubai Airport Authority and investment in the DWC ATC must clearly be seen as an investment into better technology to achieve the same function. From their eyes the new technology must reduce (or is intended to reduce) the ATC man hours per aircraft movement otherwise there is little point in the investment. From this stand point it is clear to see that regular (automatic) pay rises need to be justified by factors better than increase traffic handling.
Inflation can be mitigated by the readiness of new expats to replace old and local ATCOs will eventually attain sufficient transferrable skills to gradually replace expats from the bottom upwards (no pun intended).
When viewed from a world wide prospective the SERCO package for ATS is extraordinarily attractive given the working environment, and to support this, just look at the number of ATS staff who are making a lifetime commitment to SERCO for the pension and relative easy time.