Definition

A responsibility matrix is used to document and communicate the type of involvement of each team member and/or different functional groups and the ownership of specific tasks.

General

Responsibility for project tasks, decisions, and deliverables must  be clearly understood and communicated.  Assignment of each task to a specific owner is critical in enabling the optimal performance of the whole the project team. Co-ownership creates ambiguity, which dilutes accountability and responsibility.

The Responsibility Matrix provides an easy-to-scan condensed format to record important team member responsibilities from the beginning. It also helps ensure that the responsibility and involvement for  items  such as key reviews or decisions are explicitly documented as well.