Welfare programs for the disabled individuals have been carried out in many countries, in accordance with UNCRPD, through legislative measures. The social and political developments in India enabled legislation for such measures in India. To avail benefits under such welfare schemes, the degree of their psychosocial disability needs to be assessed quantitatively through valid, reliable and workable instruments. Though Chronic Mentally ill persons were included as a beneficiary group, under the Persons With Disabilities Act 1995 in India, lack of a quantified scale for psychiatric disabilities, deprived the benefits to the mentally ill , available to other category of disabled persons. This prompted the IPS in 2001, to develop a Scale for Psychiatric Disability as a time -bound one year prime project. The IDEAS Scale, thus developed, could get approval from Government of India, as the official Scale for Psychiatric Disability in India, soon after its release by IPS, through effective liaison with Administrators in Government. The internal consistency, face validity, content validity, reliability, comparability with WHO Scale, and utility and utilization for Disability Assistance Programs have all been established through studies since 2005 .The stigma on the mentally ill persons, though not totally eliminated, also got attenuated through inclusion in the spectrum of disabled individuals, covered by welfare and rehablititation programmes. The Rights of Persons with Disabilities Act 2016 (RPWD 2016) and the Mental Health Care Act 2017 (MHC Act 2017) are new legislative measures, implemented in India for the welfare of mentally ill persons. In the wake of these legislations there has been renewed interest, and concerted efforts in IPS to evolve guidelines for effective use of IDEAS and standardization of Disability Certification procedures. The time bound commitment of IPS in 2001, to develop IDEAS and getting its official acceptance by Government of India, through effective liaison, and the renewed interest and present concerted efforts to utilize it for helping large number of disabled chronic mentally ill, form sequential precious contributions for Community Mental Health in India. It seems an inspiring imitable model for professional Mental Health Organizations in other countries, probably with relevance in other health-care disciplines as well.