The labour tribunal in Papeete is tomorroe expected to rule whether French Polynesia's interim speaker had the authority to confirm the hiring of some staff at the territorial assembly last year.
This follows a complaint by the opposition Tahoeraa Huiraatira Party of Gaston Flosse which challenged the move and the authority of the interim speaker, Hiro Tefaarere.
A local weekly, To'ere, it suspects the ruling could have implications for the political developments of the past month.
If the Tahoeraa wins this case, it could use the ruling to challenge the legality of Mr Tefaarere's action in convening the assembly to vote out the Flosse-led government.
Last month, Tahoeraa insiders said they wouldn't challenge the legality of Mr Tefaarere's actions but let Oscar Temaru's coalition keep power.