The Role of the DPO in the DPIA Process: Responsibilities and Best Practices

The Legal Basis for DPO Involvement

GDPR Article 35(2) explicitly requires controllers to seek the advice of the Data Protection Officer when carrying out a DPIA. Article 39(1)(c) further establishes that the DPO's tasks include providing advice on DPIAs and monitoring their performance. This is not optional—failing to involve the DPO in the DPIA process constitutes a compliance gap.

Advisory Role, Not Decision-Making

A critical distinction: the DPO advises on the DPIA but does not make the final decisions. The controller (typically senior management) retains ultimate responsibility for deciding whether and how to proceed with processing. The DPO's role is to:

• Assess whether a DPIA is required: Review new and changing processing activities against Article 35 criteria and DPA blacklists.
• Advise on methodology: Recommend the assessment framework, risk scoring approach, and documentation standards.
• Review risk analysis: Evaluate whether identified risks are comprehensive and accurately rated.
• Recommend mitigations: Suggest technical and organizational measures to address identified risks.
• Assess residual risk: Provide an opinion on whether remaining risks are acceptable or require prior consultation with the DPA.

Practical Involvement at Each Stage

Screening Phase

The DPO reviews new projects and processing activities to determine if a DPIA is triggered. This requires close collaboration with project managers, product teams, and IT to maintain awareness of upcoming changes.

Assessment Phase

The DPO provides input on the risk assessment, challenges assumptions, and ensures all relevant risks are considered. They bring expertise on regulatory expectations, enforcement trends, and DPA guidance.

Mitigation Phase

The DPO reviews proposed mitigation measures for adequacy and feasibility. They ensure mitigations align with the principles of data protection by design and by default (Article 25).

Review and Approval

The DPO provides a formal opinion on the completed DPIA. If the DPO disagrees with the controller's decision, this disagreement should be documented. The controller explains their reasoning for proceeding despite the DPO's concerns.

Common Pitfalls

• Involving the DPO too late: If the DPIA is complete before the DPO sees it, their advisory role becomes a rubber stamp.
• Treating the DPO as the DPIA author: While the DPO advises, the project or business team should conduct the assessment with DPO guidance.
• Ignoring DPO recommendations: If the DPO's advice is consistently overridden, it signals a governance problem.
• Lacking DPO independence: GDPR requires that the DPO acts independently. Their DPIA opinions must not be influenced by business pressure.

DPO Competency Requirements

Effective DPIA involvement requires the DPO to have strong knowledge of data protection law, understanding of technical privacy measures, familiarity with the organization's data processing landscape, and the ability to communicate risks in business terms.

Jerisaliant's DPIA workflow includes dedicated DPO review stages with structured opinion forms, ensuring the DPO's advisory role is formally integrated and documented at every step.