Ad hoc committee chairwoman Makhosi Khoza and her team are set to interview 14 candidates over a 16-hour period.
National Assembly Speaker Baleka Mbete learnt about the death threats against Khoza in April.
Khoza posted screen grabs on Facebook of a series of text messages she received warning that she had 21 days to live.
Parliament said it was concerned about Khoza, who has submitted a report to ensure the correct action is taken.
Police have already assessed the situation and have confirmed that a security threat exists.
“The security assessment confirmed that a security threat existed and that appropriate support must be provided to Dr Khoza. In this regard, Parliament is working with SAPS to ensure that the two institutions collaboratively provide the necessary support to Dr Khoza as soon as possible. Dr Khoza will accordingly be advised of the arrangements,” Parliament said in a statement.