Good news first: no shorter prescription period
Unlike many states, Louisiana generally does not give the government a shorter deadline to be sued than it gives a private defendant. Under La. R.S. 13:5108, the state, a state agency, or a political subdivision is not entitled to plead prescription as a defense if the suit is filed within the same time period fixed by law for suits against private persons — meaning the ordinary prescriptive period, discussed on our main Louisiana prescription page, applies here too.
The real danger: a 90-day service requirement, after filing
The genuine trap sits in a different statute entirely. Under La. R.S. 13:5107(D), once the state, a state agency, a political subdivision, or an officer or employee of any of them is named as a party, the claimant must request service of citation on that defendant within 90 days of filing the lawsuit. This isn't a deadline to file suit — it's a strict deadline to formally serve the government defendant once suit has already been filed.
Why missing it can be just as fatal as missing prescription
If service isn't properly requested within that 90-day window, the government defendant can be dismissed from the case. And under R.S. 13:5107(D)(3), that dismissal does not interrupt or suspend the running of prescription as to that government defendant — even though filing the original lawsuit would normally have interrupted it. In practice, this means a claim can still be lost even though the lawsuit itself was filed well within the ordinary prescriptive period.
A second lawsuit usually doesn't fix it
Louisiana courts have specifically addressed, and rejected, the instinct to simply refile. In a case decided in Louisiana's courts, a claimant whose first lawsuit against a city was dismissed for failing to timely request service argued that filing a second lawsuit — even before the first was formally dismissed — should have preserved her claim. The court held that because the first lawsuit's dismissal did not interrupt prescription as to the government defendant, the second lawsuit was still untimely.
The practical lesson
Because this 90-day service requirement operates independently of the underlying prescriptive period, and because missing it can undo a claim that was otherwise filed on time, treating service of citation on a government defendant as its own urgent deadline — separate from, and just as important as, the prescription date itself — is essential in any Louisiana claim involving the state or a political subdivision.