University of Ghana
1. Institute of Statistical, Social and Economic Research (ISSER), 1993-2009
- Head, Statistics, Computing, Information and Communication Division (SCCI), 1998-2004
- Co-ordinator, Certificate and Diploma Programmes in Statistics, 1994 – 2000
- Co-ordinator, Short Course on Data Management and Analysis, 1999-2004
2. Department of Statistics, 1987-1993
· Lecturer, 1987 – 1992