Stamp 5 / work permit cross country

[mktsoi]

I found the following link:

http://jobera.com/ireland-work-permit/c ... ermit.html

it said "Non-EEA workers who are legally employed in one member state and temporarily working on contract in another member state do not require a work permit for the duration of the contract."

That only apply to a person with a work permit in Ireland. What about a person already have a Stamp 4 or Stamp 5. If that person got sent over by his/her company to perform work in another EU member state. How does it work out??? Does it mean that person has to get another permit in the EU member state?

Thx

[strongbow]

I think that refers to the Van der Elst visa (http://www.inis.gov.ie/en/INIS/Pages/Van_der_Elst_Visa)