What Does ISO 45001 Actually Change in Day-to-Day Construction Operations?

A signed Job Safety Analysis (JSA) does not, by itself, prevent an accident. The same applies to an approved Permit to Work (PTW).

These documents only serve their purpose when they reflect the work actually being performed in the field. If the construction method changes, an interference is discovered, or another crew starts working in the same area, conditions are no longer the same as those assessed at the outset.

This is precisely where ISO 45001 needs to make a difference: in the ability to recognize changes, reassess risks, and adjust the work before proceeding.

Has the activity changed? The assessment must change too.

On a construction site, few conditions remain static. Equipment is replaced, access routes change, multiple work fronts begin operating simultaneously, and work sequences need to be revised.

When this happens, the JSA, PTW, and operational controls must also be updated. Keeping the original authorization in place after a significant change means carrying out an activity that differs from the one originally assessed.

That is the purpose of management of change within the system: reassess hazards, adjust controls, and only then authorize the work to continue.

Safety is also a production decision

Schedules, equipment, access, and construction sequences are determined by production teams. These decisions can reduce a risk or create a new exposure.

That is why safety cannot be confined to the occupational health and safety department. Engineering, planning, supervision, and field leadership must all be involved in defining the controls. If production changes how the work is carried out, the safety conditions must be reassessed as well.

The people doing the work need to participate

Workers are often the first to notice when a tool is unsuitable, access has become unsafe, or a procedure no longer matches the conditions on-site. But this awareness only contributes to safety when there is an opportunity to raise and discuss these concerns before work begins.

With this objective, we conducted an exercise at one of Acrópole Construção’s jobsites based on the guidelines of ABNT NBR ISO 45001:2018, the Brazilian adoption of ISO 45001. Faced with a simulated scenario, the crew identified risks associated with hand and finger exposure and discussed the necessary controls before authorizing the activity.

Rather than simply receiving instructions, employees took part in the assessment. The exercise connected the procedure to actual field conditions and reinforced the role of workers in identifying hazards.

The standard must make a difference in the field

Brazil’s NR-1 and NR-18 regulations already establish requirements for occupational risk management and the Risk Management Program (PGR) on construction sites. ISO 45001 helps integrate the risk register, action plan, operational controls, inspections, and corrective actions within a single management system.

The results become visible in how near misses are addressed, recurring deviations are corrected, and the effectiveness of implemented measures is verified.

If the work front changes, the assessment must change with it. If a control fails, recording the issue does not resolve it. The condition must be corrected, and the solution must be checked to confirm that it works.

Work should not be authorized solely on the basis of how it was planned. Authorization must take into account how the work will actually be performed in the field.