In 1980 at the same Accra Academy, however, changed the name Pentecost Relief Association to Pentecost Welfare Association (PENTWAS).  PENTWAS was registered with the Registrar General’s Department on 17 March 1980 a charitable Non-Governmental Organisation. Elder A.H.L Clottey was appointed the first Manager of the organisation (1981 – 1983).

In June 1983, the name Pentecost Welfare Association (PENTWAS) was changed to Pentecost Social Services (PENTSOS). PENTSOS was registered as a Church Non-Governmental Organisation with the Department of Social Welfare on 6th January 1992 (Number D.S.W.452).  It is also a member of the Ghana Association of Private Organisations in Development (GAPVOD). In October 1986, Elder Johnson, Adam-Yeboah was appointed as the Schools Manager and in 1989 he combined this with the position as Coordinator of PENTSOS.  In 1999, he was appointed as the first Director of PENTSOS when PENTSOS was given a full Directorate status.  After his retirement, Elder Dr. Yao Yeboah took over as the PENTSOS Director in September 2003 and subsequently Elder George Afrifa in 2016 – May 2019. Elder Richard Amaning was appointed by the Executive Council in May 2019 as the successor of Elder George Afrifa.

PENTSOS in the past 40 years has provided tangible hope to vulnerable communities and members of the Church through its social intermediation and development efforts. The provision of health care services, access to basic education and economic empowerment of members in need are among some of the novel projects implemented by PENTSOS in the past decade. PENTSOS since its inception has implemented various developments and humanitarian interventions that have impacted the lives of many. PENTSOS has contributed immensely to enhancing access to basic education through the establishment of 90 Pentecost Schools across the country, 1 Vocational Training School, 2 Senior High School, 2 Skills Learning and Development Centres and 8 Health care facilities (3 Hospitals and 5 Clinics). PENTSOS established a cooperative financial institution referred to as the Pentecost Cooperative Mutual Support and Social Services Societies (PENCO) and has 32 active societies operating within 28 Church Areas across the country.PENTSOS long term development programming, capacity building, and practical work at the grassroots are people-centered. This is because the organization holds a belief that: people suffering under poverty, economic, social and political inequality are best placed to explore the root causes of injustice, identify strategies for solutions, and act upon them to bring about positive changes in their lives.