The Mahatma Gandhi National Rural Employment Guarantee Act (MGNREGA) was enacted with immense hope for paradigm shift and societal change ensuring legal protection of employment to rural citizens, especially to the marginalized section in India. But, the implementation of the Act shows a mix picture in general, though it shares a major portion of national budget allocation. It is now the proven fact that the Act is not being successful to provide social justice to the marginalized population relating to the issues concerning ‘right to work’, ‘demand for work’, ‘right to get timely wages’ ‘right to conduct Social Audit’ along with ‘right of planning –implementation- evaluation of MGNREGA’, creation of productive and sustainable assets for promotion of livelihood in rural areas. On the other hand, there is an increasing apathy on the part of people on the Act. questions about ‘how to regain the faith and confidence of citizens on the Act. overcoming the present deficiencies at various levels. The introduction of ‘Social Engineering’ in reshaping and overcoming the present field related hazards and limitations along with deficiencies in the legislation might be one of the probable solutions. ‘Social Engineering’ is comparatively a new concept in development field and today it has become a general task of each and every organization. There is also a global need of ‘Social Engineering’ in every sphere of development sector involving technical, economic and social aspects to deal with and achieving sustainability as an end result. However, this paper will focus on how “Social Engineering” is becoming instrumental in overcoming the barriers and strengthening the existing systems and mechanisms in MGNREGA. The present study is based on few Focus Group Discussions held under two Gram Panchayats of Mongolkote Development Block of Purba-Bardhaman district under West Bengal.