She is the Member of Parliament for Awutu Senya East Constituency and doubles as the Minister of Special Development Initiatives.

[14] In May 2017, President Nana Akufo-Addo named Mavis Hawa Koomson as part of nineteen ministers who would form his cabinet.

[15] As a Cabinet minister, Mavis Hawa Koomson is part of the inner circle of the president and is to aid in key decision-making activities in the country.

[18] In the 2024 Ghanaian general elections, Hawa Koomson lost to the NDC Parliamentary Candidate for the Awutu Senya East Constituency Phyllis Naa Koryoo Okunor who secured 50,886 votes, representing 52.7%, while Hawa Koomson, garnered 45,638 votes, representing 47.3%.

[14] In July 2020, Hawa Koomson breached security laws and fired gunshots into a crowd of citizens who were in the process of registering for the controversial voters ID card.

[23][24] She introduced an annual soccer competition dubbed the Kasoa MP's Cup among the youth in her constituency.