THE IMPACT OF OFFICE ERGONOMICS ON EMPLOYEE PERFORMANCE; A CASE STUDY OF THE GHANA NATIONAL PETROLEUM CORPORATION (GNPC) By ASANTE KINGSLEY (PG. 4095010) A Thesis submitted to the Institute Of Distance Learning, Kwame Nkrumah University of Science and Technology in partial fulfillment of the requirements for the degree of COMMONWEALTH EXECUTIVE MASTERS OF BUSINESS ADMINISTRATION SEPTEMBER 2012