Mr Hichilema said the Zambian government needed to give the people a new constitution because it was obliged to do so.
He said this at a press briefing held in Lusaka today.
Mr Hichilema said Government should not delay the constitution making process but instead fund it expressing confidence that a new constitution would resolve national problems including funds.
The opposition leader added that there was need for a Constituent Assembly which would provide a road map and deal with funding and legal issues.
And speaking on corruption, Mr Hichilema described the vice as a huge negative monster costly to the Zambians hence the need to be fought.
He said the UPND supported the fight against corruption because money which should be applied in the health and education sectors was being wasted due to corrupt practices.
He suggested that public service workers should be paid well to avoid corruption.
Mr Hichilema further said corruption should be handled firmly and fairly and those that need to be persecuted should be dealt with professionally.
He urged the UPND Members of Parliament to perform their civic duties effectively.