Appears the new changes came into effect from June 1st 2009:
http://www.citizensinformation.ie/categ ... mit_scheme
http://www.deti.ie/labour/workpermits/r ... 202009.htm
Q. I am a Work Permit holder. Can my Spouse and Dependants work?
A. Yes once they are legally resident in the State on the basis of being your Spouse or Dependant, and you applied for your first Work Permit before 1 June 2009, they are free to seek employment and to apply for a Spousal/Dependant work permit provided they full fill the criteria for a spousal/dependant work permit.
However, if you applied for your first Work Permit on or after 1 June 2009, your Spouse or Dependant cannot be considered for an employment permit under the spousal/dependant scheme. They would require a work permit in their own right and the normal procedures would apply for a work permit.