Many services are offered to keep people informed of changes in policies and laws of countries worldwide. Here are some useful links to associations as well as services that can give you a head start.

Permits Foundation
Permits Foundation  is an international non-profit corporate initiative to promote access of accompanying spouses and partners of international staff to employment through an improvement of work permit regulations.
More than forty major international companies and organisations worldwide have joined the Foundation to encourage governments to relax work permit regulations that currently make it difficult for spouses to work in many countries.
website: http://www.permitsfoundation.com/home.htm
Site in English only

Workpermit
Workpermit.com is registered with the Office of the Immigration Services Commissioner and offers immigration and work permit consultations and services for entry to the UK, Australia, USA, New Zealand, Canada and most Western European Countries.
http://www.workpermit.com/
Site in English,  Русский,  Français,  Italiano