While conducting a site visit for a residential tower delivered through the design-build method, an architect observes several construction workers…

The architect is not responsible for construction means, methods, or job site safety; this is the sole responsibility of the contractor (in this case, the design-builder). However, upon observing an obvious safety violation, the architect has an ethical and professional duty to act. The appropriate action is to formally document the observation and notify the party contractually responsible for site safety—the contractor. Directing the workers would make the architect liable. Notifying the contractor in writing creates a formal record and directs the information to the entity with the authority and obligation to correct the issue. Copying the owner is appropriate to keep them informed about the contractor's performance regarding safety protocols on their project.

A. Immediately instructing construction workers on which safety precautions need to be taken.

This action would constitute directing the contractor's means and methods, thereby exposing the architect to liability for job site safety.

C. Document the unsafe working conditions and send a memo to the owner copying the contractor.

The primary notification must be sent to the party responsible for taking corrective action, which is the contractor, not the owner.

D. Request that the contractor review safety precautions that need to be taken with construction workers.

This is less effective than option B. A formal, written memo documenting the specific, observed violation is the standard of care, providing a clear record and demanding specific action.

1. The American Institute of Architects (AIA). The Architect's Handbook of Professional Practice, 15th Edition. Wiley, 2013.

Chapter 10.3, "The Architect’s Role in Construction," states, "Architects should never instruct or direct the contractor’s employees or subcontractors... If the architect observes a situation that he or she believes is unsafe, the architect should report the observation to the contractor’s representative at the site." (p. 718). This supports notifying the contractor, not directing workers.

2. AIA Document A141™–2014, Standard Form of Agreement Between Owner and Design-Builder.

Section 5.1.1 states, "The Design-Builder shall be solely responsible for, and have control over, construction means, methods, techniques, sequences and procedures and for coordinating all portions of the Work under the Contract." This establishes the design-builder (contractor) as the single entity responsible for safety, reinforcing that they are the correct party to notify.

3. Demkin, J. A. (Ed.). The Architect's Handbook of Professional Practice, 14th Edition. Wiley, 2008.

In the section on Construction Contract Administration, it is emphasized that the architect's role is one of observation, not supervision. Reporting observed safety issues to the contractor is the appropriate channel of communication to avoid assuming the contractor's responsibilities and liabilities. (Chapter 1.1, "The Construction Industry," and Chapter 9.3, "Construction Contract Administration").

4. University of Michigan, Taubman College of Architecture and Urban Planning. Professional Practice Course (Arch 583).

Course materials consistently emphasize that architects must avoid assuming responsibility for job site safety. The established protocol for observing hazards is to notify the general contractor in writing. This protects the architect from liability while fulfilling their duty to the health, safety, and welfare of the public.