La. Stat. tit. 16 § 623
The district attorney of the twenty-eighth judicial district shall receive no fees nor other compensation for official service in the district court. He shall represent the parishes of the twenty-eighth judicial district and other public boards therein, in all matters of litigation in which the parishes or boards may have an interest, and shall be their legal adviser when so requested without extra compensation. In any litigation or business necessitating the attention or assistance of the district attorney outside of his judicial district, by either the parishes, school boards, or other public boards, the district attorney shall be allowed and paid his expenses. This Section shall not apply to any fees that are recovered as penalties in a civil suit where attorney's fees are made a part of the damages or penalties by statute.
La. R.S. § 16:623