• Aug. 1, 2020 - Present: Provost, College of Humanities and Social Sciences, KNUST, Kumasi
• Aug. 1, 2018 - July 2020: Vice Dean, Faculty of Social Sciences, KNUST, Kumasi
• Aug. 1, 2016 - July 2018: Dean, Faculty of Social Sciences, KNUST, Kumasi
• Apr. 1, 2015 – Mar. 31, 2015: Visiting Professor (DAAD Scholar), Institut für Anglistik und Amerikanistik, Universität Potsdam, Germany
• Aug. 2012 – Mar. 2014 and Aug. 2015 - July 2016: Head of Department, Dept. of Modern Languages, Kwame Nkrumah University of Sciences and Technology, Kumasi-Ghana
• Aug. 2013 – Mar. 2014: Vice-Dean, Faculty of Social Sciences, Kwame Nkrumah University of Sciences and Technology, Kumasi-Ghana
• Aug. 2011 – Present: Senior Lecturer, Dept. of Modern Languages, Kwame Nkrumah University of Sciences and Technology, Kumasi-Ghana
• Oct. 2006 – July 2011: Lecturer, Dept. of Modern Languages, Kwame Nkrumah University of Sciences and Technology, Kumasi-Ghana
• June 20 – July 31, 2010: Visiting Assistant Professor
• Communication and African Studies Programme, School of Humanities, University of Hong Kong
• Sept. 2007 – June 2009: Part-Time Lecturer, Dept. of Communication Studies, Christian Services University College, Kumasi-Ghana
• Aug. 2009 – June 2010: Part-Time Lecturer, Dept. of Linguistics, University of Ghana, Legon
• Oct. 2005 – Aug. 2006: Tutor and Research Assistant, Dept. of Linguistics, University of Hong Kong

Others

• President: University Teachers’ Association of Ghana, KNUST (UTAG-KNUST) and National (UTAG-National), October 2019-Present
• Vice-President: University Teachers’ Association of Ghana, KNUST (UTAG-KNUST), June 2015-Oct. 2019
• President: Linguistics Association of Ghana (LAG), August 1, 2014 – Present
• Editor: CASS Newsletter, 2013 – Present
• Chairman: Board of Directors, House of Faith Credit Union (HoFCU) of the House of Faith Ministries (HoFM), Kumasi, June 2009-Present
• Secretary: University Teachers’ Association of Ghana, KNUST (UTAG-KNUST), June 2011-2015