He also served as Executive Director of the National Institute for Policy Studies and was Legal Consultant to the Department of Education, the Committee on Rules of the House of Representatives, and the Commission on Appointments.

He introduced the codification, tracking and archiving system that significantly contributed to the transparency and efficiency of the Sanggunian.

Under his watch, the Butuan City Council was chosen National Finalist in a Search for Most Outstanding Sangguniang Panlungsod by the Philippine Councilors League (PCL) and the Department of the Interior and Local Government (DILG).

Representative Fortun bravely took positions consistent with rule of law and human rights on several controversial issues in the House.

[18] He also was among the few House members who stood up against the infamous P1,000.00 budget for the Commission on Human Rights[19] saying “Congress should strengthen democratic institutions, not weaken them.” Fortun was one of 20 legislators who introduced a resolution upholding the independence of the Ombudsman at the height of attacks against the Office in 2017.

He vigorously opposed the non-renewal of the franchise of ABS-CBN[20] on the ground of press freedom and preservation of jobs of over ten thousand breadwinners in the middle of a pandemic.

Asserting fundamental rights and freedoms and adherence to the Constitution, Representative Fortun voted against the Anti-Terror Bill.