Page URL: https://practice.orangatamariki.govt.nz/policy/allocation-of-key-social-workers-co-social-workers-and-support-roles
Printed: 13/10/2026
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Last reviewed: 13/10/2026

Allocation of key social workers, co-social workers and support roles

Oranga Tamariki is committed to ensuring tamariki, rangatahi and their whānau or family receive safe, consistent and culturally responsive services enabled through the appropriate allocation of key social workers, co-social workers and support roles.

Guiding principles

Allocation decisions will:

  • put the oranga, including safety, and best interests of tamariki and rangatahi first
  • support enduring and purposeful relationships with tamariki, rangatahi and whānau or family
  • promote continuity and stability in engagement, planning and decision-making
  • respect and respond to identity, culture, whakapapa, whanaungatanga and communication needs
  • match the needs and complexity of each situation with the capability, capacity, experience and support needs of kaimahi.

Supporting practice

Our practice is delivered through our practice framework, our practice models Te Toka Tūmoana and Va'aifetū, our practice standards, and our tools and resources.

Overview

This policy outlines:

  • allocation requirements across cases and phases
  • allocation responsibilities, roles and accountabilities for supervisors, key social workers, co-social workers and support roles
  • recording and system requirements for allocations.

When this policy applies

This policy applies:

  • to all Oranga Tamariki supervisors involved in the allocation of key social workers, co-social workers and support roles
  • to all Oranga Tamariki kaimahi who are allocated key social worker, co-social worker or support role responsibilities in the delivery of casework to tamariki and rangatahi and their whānau or family
  • from the point a phase requires allocation and continues until the case is:
    • closed
    • transferred, or
    • formally reallocated.

Making allocation decisions

Allocations must be consistent with:

  • statutory responsibilities
  • operational delegations
  • approved role descriptions.

A supervisor must allocate a key social worker to each CYRAS phase.

A supervisor may also allocate a co-social worker or support role where this will support effective practice, service continuity, capability development, or the needs of te tamaiti, rangatahi or whānau or family.

The allocation of co-social workers or support roles does not transfer primary accountability from the key social worker.

Key social worker roles and responsibilities

Kaimahi allocated to the role of key social worker must be employed in the role of social worker.

The key social worker holds primary responsibility for ensuring the oranga, including safety, of te tamaiti or rangatahi, including:

  • case direction, including assessment and planning to meet assessed needs
  • statutory and delegated social work functions
  • oversight of all case activity
  • ensuring that te tamaiti or rangatahi and their whānau or family and other key parties understand what is happening, who the key people are and how communication will occur.

Co-social worker roles and responsibilities

Kaimahi allocated to the role of co-social worker must be employed in the role of social worker.

Co-social workers support delivery of the casework, continuity of service, specialist intervention, cultural support, residential coordination and workforce development needs.

Co-social workers must:

  • escalate safety concerns or significant events promptly
  • complete agreed activities and responsibilities
  • share relevant information, observations and analysis with the key social worker
  • contribute to assessments, planning and case reflection
  • support consistent and coordinated practice
  • maintain accurate CYRAS recordings.

Co-social workers should participate in joint supervision or case consultation where appropriate.

Residential co-worker responsibilities

Residential co-workers must:

  • share responsibility for supporting te tamaiti or rangatahi while they are in residence
  • contribute information to support development, review or updates to Goal Plans and residential planning
  • provide other relevant information and updates to the key social worker
  • bring the voice of te tamaiti or rangatahi to decision-making
  • facilitate pre-admission and pre-discharge planning processes
  • support transition planning and residential Multi-Agency Team meetings
  • support coordinated communication between residential staff, the key social worker, and whānau or family.