No. You can go anywhere in the 26 counties of the Republic of Ireland. After your arrival and USIT orientation in Dublin, where you will complete your work authorisation process with the Work in Ireland team, you are free to head to any part of the country.
Please note, there is only one Work in Ireland resource centre which is situated in Dublin city centre. If you reside outside of the Dublin area USIT provide assistance through email, Skype, Phone and our closed FB groups.