Workplace Relations Act 2015
Service of documents
6. (1) A notice or other document that is required to be served on or given to a person under this Act shall be addressed to the person concerned by name, and may be so served on or given to the person in one of the following ways:
(a) by delivering it to the person;
(b) by leaving it at the address at which the person ordinarily resides or, in a case in which an address for service has been furnished, at that address;
(c) by sending it by post in a prepaid registered letter to the address at which the person ordinarily resides or, in a case in which an address for service has been furnished, to that address; or
(d) by electronic means, in a case in which the person has given notice in writing to the person serving or giving the notice or document concerned of his or her consent to the notice or document (or notices or documents of a class to which the notice or document belongs) being served on, or given to, him or her in that manner.
(2) For the purpose of this section, a company within the meaning of the Companies Acts or the Companies Act 2014 shall be deemed to be ordinarily resident at its registered office, and every other body corporate and every unincorporated body of persons shall be deemed to be ordinarily resident at its principal office or place of business.