Most Irish construction sites have a project supervisor. Far fewer have one who actually knows what the job requires. The Safety, Health and Welfare at Work (Construction) Regulations 2013 split supervisory responsibility into two distinct roles, and confusing them is not just an administrative error. It is a statutory failure with consequences.
What the Regulations Actually Created
The 2013 Construction Regulations introduced two separate supervisory roles for any notifiable construction project. Notifiable means the work will last longer than 30 working days, or will exceed 500 person-days of labour. Most commercial builds, fit-outs, and significant civil works hit that threshold.
The two roles are the Project Supervisor Design Process (PSDP) and the Project Supervisor Construction Stage (PSCS). They are not interchangeable. They cover different phases, carry different duties, and require different competencies. Lumping them together on paper to save cost is a move the HSA has seen many times and does not look kindly on.
The PSDP: Before a Spade Goes in the Ground
The PSDP is appointed before design work begins. The client appoints them, and that appointment must be in writing. The PSDP coordinates safety during the design and planning stage. That means identifying hazards arising from design decisions, coordinating between designers to eliminate or reduce risks before they become site problems, and preparing the preliminary safety and health plan that gets handed to the PSCS before construction starts.
The PSDP also opens the project notification file with the HSA. This is a live document that follows the building through its life. Information goes in throughout the project, and the completed file transfers to the building owner at handover. A facilities manager years later, planning maintenance work at height, depends on that file being accurate and complete.
Competence is not optional here. The PSDP must have the knowledge, skills, and resources to do the job. A designer appointed as PSDP purely because they are already on the project, without any real capacity to coordinate safety across a design team, is a problem waiting to surface.
The PSCS: Taking Responsibility When Work Starts
The PSCS takes over at the construction stage. Again, the client appoints them, in writing, before construction begins. The PSCS is typically the main contractor, but it does not have to be. What matters is that they have control over the site and the authority to direct how work is carried out.
The PSCS coordinates safety during construction. They develop the safety and health plan into a working site document, ensure contractors and subcontractors apply it, coordinate welfare facilities, and manage the flow of safety information across the site. They notify the HSA of the project using the prescribed form. They maintain site-specific records and contribute to the safety file throughout the build.
When something goes wrong on site, the PSCS is the first name the inspector writes down. Falls from height remain the single largest category of fatal incidents on Irish construction sites. In almost every investigation, the thread runs back to a failure in the safety and health plan, a gap in coordination, or a PSCS who treated the role as a form-filling exercise.
The Client's Obligations
The client is not a passive bystander. Under the 2013 Regulations, the client must appoint a competent PSDP and PSCS, provide pre-construction information relevant to safety, and ensure both supervisors have what they need to do their jobs. A client who appoints a PSDP or PSCS without checking competence, or who applies commercial pressure that undermines safety coordination, carries legal exposure.
Domestic clients get limited exemptions for single-dwelling projects where they do not intend to sell or let. Everything else is in scope.
Where a client fails to appoint a PSDP, the role defaults to the designer. Where no PSCS is appointed, it defaults to the main contractor. The law does not leave a vacuum. It assigns liability somewhere, and that somewhere is rarely comfortable.
What Failure Looks Like
The HSA can issue improvement directions, improvement notices, and prohibition notices. Fines under the Safety, Health and Welfare at Work Act 2005 run to €3 million on indictment for body corporates. Individuals face fines and imprisonment. These are not theoretical outcomes.
The pattern the HSA repeatedly finds is this: a project supervisor appointed by name, often with minimal written brief, no real authority over other contractors, and no functioning system to actually coordinate safety. The paperwork exists. The role does not. When an incident occurs, the appointed person finds out exactly how much personal exposure that nominal appointment created.
Competence is the word that appears most often in prosecutions. It is not about holding a particular certificate. It is about demonstrable knowledge of construction safety, experience relevant to the project type, and the organisational resources to carry out the coordination duties. A sole trader appointed as PSCS for a 200-person site with no staff and no system cannot be competent for that role, regardless of what their CV says.
When Both Roles Are the Same Person
On smaller notifiable projects, one person or organisation can hold both roles. This is legitimate and common. The duties remain separate, the written appointments still need to be in place, and the competence requirement applies to both sets of responsibilities. Combining the roles does not reduce the workload. It concentrates it.
The Turn
The framework works when clients take appointments seriously, supervisors have real authority, and coordination happens throughout design and construction rather than appearing on a checklist at the end. When those conditions are absent, the titles of PSDP and PSCS become liability labels rather than safety roles.
The regulations know what they want. A competent person, appointed early, with the resources and authority to act. Whether a project delivers that is a choice made long before the first contractor arrives on site.
