Pro-tem speaker is mainly an operating and temporary speaker. To conduct the works in the centre or in state legislatives, pro-tem speaker is appointed for a limited time period. Generally in such a condition when the Lok Sabha and Legislative Assemblies have been elected, but the vote for the speaker and deputy speaker has not taken place, the pro-tem speaker is chosen. Pro-tem speaker is chosen with the agreement of the members of the Lok Sabha and legislative assembly, so that he can carry on the activities till the permanent speaker is not chosen.
In many a situations, both the speaker and the deputy speaker posts in the House may lie vacant, (death, resignation etc.) then the tasks in the House are undertaken under the pro-tem speaker. The powers regarding the pro-tem speaker are not clarified. But this much is clear that pro-tem speaker does not have as much power as the permanent speaker has. Pro-tem speaker's duty is to conduct the works in the House properly keeping certain aims before for a limited period of time till the permanent speaker is chosen.