[1] In the May 2002 parliamentary election, Ossiala stood as the candidate of the Rally for Democracy and the Republic (RDR) for the third constituency of Talangaï, a district of Brazzaville.
The RDR was part of the United Democratic Forces (FDU), a grouping of parties supporting President Denis Sassou Nguesso.
[2][3] He credited his victory to "the contract of loyality I signed with voters" and "the simplicity of my speeches and my actions" and noted that he had avoided "personal invective" when campaigning.
Later in 2002, the Talangaï Development Agency began working to implement Ossiala's campaign promises by training young people to do various jobs.
[4] In line with his campaign promises, he also initiated construction of a bridge in Talangaï in October 2002, both to improve mobility in the district and to provide employment.
[7] While continuing his work in the National Assembly, Ossiala began teaching a course on issues related to the oil industry at Brazzaville's Marien Ngouabi University in 2005.
[13] In July 2009, Ossiala launched an initiative to finance small, individual projects for about 500 young people in his constituency through monthly payment installments.
The organization was intended to serve as a discussion forum for residents of Brazzaville quarters 63 and 66 regarding Sassou Nguesso's Future Path (chemin d'avenir) development program.