La. Stat. tit. 13 § 3914
When the garnishee is a nonresident who is doing business in this state, but has not appointed an agent for the service of process therein, and who is absent from his place of business in this state at the time the particular service is attempted to be made on him there, the citation, petition, garnishment interrogatories, notice of seizure, and all other pleadings and notices in the garnishment proceeding, may be served on any of his agents or employees of suitable age and discretion at this place of business, with the same legal force and validity as if served on him personally.
This section applies to any garnishment made under any provision of the Louisiana Code of Civil Procedure or of R.S. 13:3921 through 13:3927.
The definition of "nonresident" in Article 5251(11) of the Louisiana Code of Civil Procedure applies equally to this Section.
La. R.S. § 13:3914