A Tongan pro-democracy MP, Uiliti Uata, says constant delays are threatening the ability of a tripartite committee on political reform to report back to parliament on time.
The committee was established at the end of June and has to report back to parliament on August 6th.
It is to look at three models, including that put forward by the National Committee for Political Reform which last year consulted widely with Tongan communities around the world.
Mr Uata, who is one of the nine members of the tripartite committee, says the intention was for the committee to meet every day but so far they have got together just once.
"We would like to see that work is carried out every day and make sure that the assignment that has been given to us is complete by the 6th of August. but so far the delay has come from the members of the representatives of the government because they are too busy on their other assignments and they keep calling and asking for the delay and so forth."