YSSN communicates, connects, and collaborates with people who live
with serious mental illness and/or a developmental disability.

We help them, alongside their families and caregivers, develop relationships and connections to their community, which benefits their overall well-being.

Through 310-COPE and our 24/7 Crisis support, case management, peer mentorship, and access services, we connect people with the services and supports they need to achieve their goals and live a full and meaningful life.

Our Vision

A Meaningful Life for All: Relationships, Community, Well-Being.

Our Mission


Our guiding principles


We are compassionate. We are kind and patient with those we work with and with ourselves. We take the time to listen attentively, without judgement.


We are resilient. We see setbacks as an opportunity to build skills and strengths by seeking positive solutions.


We collaborate. We engage each other in a cooperative process, internally and externally, to create solutions of mutual benefit.


We are accountable. Individually and mutually, we hold ourselves responsible for our actions and results. We are answerable to all our stakeholders, including each other.


We take initiative. With creativity and leadership we explore, build and pursue opportunities.

Vision, mission et valeurs

Notre vision

Une vie enrichissante : relations, collectivité, bien-être

Notre mission

Communiquer. Connecter.  Collaborer.

Nos valeurs

  • Nous accordons la priorité à la satisfaction du client.
  • Nous faisons confiance et nous respectons les autres.
  • Nous dialoguons entre nous.
  • Nous assumons la responsabilité.
  • Nous sommes généreux.

Cliquez ici pour lire l’énoncé complet de notre vision, de notre mission et de nos valeurs.

We are well established.

Since its inception in 1982, YSSN has provided case management to persons with a developmental disability. In 1985, a Mental Health Case Management Program was added to our service offerings, followed by a community Crisis Response Services being launched in 1999. In July 2011, YSSN was designated as a Developmental Services Organization for the Central East Region.

YSSN receives funding from the Ministry of Children, Community and Social Services (MCCSS) and Ontario Health.

There is no fee for our services.

We are aware.

At YSSN, we understand the many issues our clients face – lengthy waiting lists for services, lack of residential placements and community supports, confusion around what services are available, and challenges in accessing the help that they need. We also are aware of the changing and diverse needs of our region’s communities and are committed to meeting those needs.

We respect diversity.

Diversity refers to the many identities and cultures within our society including race, ethnicity, gender, social class, immigration history, religion, sexual orientation and others that influence the thoughts, actions and behaviour of individuals. Identities tend to be overlapping and each has its own culture.

Through diversity awareness, individuals of different identities are supported to navigate the cultural differences encountered in society and embrace the richness that results from inclusion and acceptance.  Cultural competence facilitates the attitudinal and behavioural changes required to eliminate racism, sexism, and classism.

The demographic makeup of York Region is rapidly changing and cultural competence is required for the delivery of exemplary services.  YSSN expects employees to respect values, attitudes and traditions that are different from their own such as dress, notions of modesty, use of eye-contact, help-seeking behaviour, spirituality, issues of privacy and personal boundaries.

YSSN is a non-profit organization that receives funding from the Ministry of Children, Community and Social Services (MCCSS) and Ontario Health. There is no fee for our services.

We are committed to accessible services and supports.

At YSSN, we are committed to full inclusion of vulnerable persons. This is reflected is our Mission, our Vision and our philosophical framework. YSSN has long been committed to services and supports which are accessible, customer service which is respectful and helpful, human resources policies which accommodate employees’ special needs, technology which supports work from a variety of locations, and sites which are easy to reach and located within safe neighbourhoods. A copy of YSSN’s Accessibility Plan and Accessibility Policy is available below:

Accessibility Plan

Accessibility Policy

Patient Declaration of Values for Ontario

We endorse the Patient Declaration of Values for Ontario as established by the Minister’s Patient and Family Advisory Council

Business Interruption Plan

YSSN has developed a plan to ensure continuity of service as best as possible in the case of an emergency office closure or other significant interruption to our business.

In the event of an office closure, please refer to this website for updated information which will be posted as it becomes available.