Association: A group of people with a common problem in an association in order to resolve their problem. It usually offers documented and technical assessment.

General technical services: centres set up to inform, co-ordinate and facilitate access to community social welfare mechanisms in a particular geographical area. The Basic Units of Social Attention are included in this section.

Advice centres: are centres which offer advice, diagnostic, assessment and follow-up service and, in some cases, out-patient treatment.

Day centres: open centres which promote social harmony within a certain population or neighbourhood. Social assistance services and other educational and recreational services are provided.

Residential Centres: are centres in which permanent attention is offered along with full care, with lodging, maintenance, and other complementary services. All centres which offer residential service are included in this category: Welcome Centres, Shelters, Recuperation Centres with board and lodging, Functional Homes, and other Residences.

Occupational and employment centres (CO-CEE): centres which provide occupational therapy services and businesses the entire staff of which are differently abled, with only the necessary minimum of personnel not so.

Others: centres characterised for carrying out specific functions different to those mentioned above, if and when this is the consequence of a new modality of welfare, or when the centre is not readily included in the previous sections.