It depends where you would be getting paid. If you would be getting paid in Canada by a Canada company into a Canada bank account, then your status is a business trip and you don't need a work permit. Otherwise you do need it.
Explanation comes from Irish Revenue because Revenue makes difference between business trip into Ireland and work in Ireland.
However the new guidance issued by Revenue impacts travellers coming
to Ireland where that individual spends greater than 30 days in
Ireland in a calendar year and is
- Working for an Irish employer where the duties performed by the individual are an integral part of the business activities of the
Irish employer, or
- Replacing a member of staff of an Irish employer, or
- Gaining experience working for an Irish employer, or
- Supplied and paid by an agency (or other entity) outside the State to work for an Irish employer.
Where any of those conditions are met, there will now be an obligation
to withhold PAYE taxes from the individual, once he or she is here for
more than 30 days. Up to this, such a person had to be in Ireland for
more than 183 days before this happened.