She has served in the department of telecommunications since 2017, and in the department of communications since 2011.
During her tenure as deputy minister of communications, Ndabeni-Abrahams had an acrimonious relationship with then minister Faith Muthambi.
In the ANC, Ndabeni-Abrahams serves on the provincial executive committee in the Eastern Cape.
During Ramaphosa’s campaign for office, she was seen to have worked hard to lobby ANC members to elect him as party president.
Ramaphosa did not say who would replace her as deputy minister of telecommunications.
He further announced another deputy minister vacancy, with deputy energy minister Thembi Majola resigning from January 1 next year.
The changes announced by Ramaphosa reduced the number of ministers in his cabinet to 34, with at least four deputy minister vacancies.
Ramaphosa said the merger of the two departments would help with the realignment of government “which we need right now”.
Former president Jacob Zuma was criticised when he decided to split the departments in 2014.
Analysis by the department of public service and administration showed that the splitting of the two departments was expensive and ineffective because one department made policy while the other had to execute it.