By Eng. Vaughn Lezama
Every profession—engineering, medicine, law, accounting, architecture—rests on a shared foundation of competence, diligence and ethics. This foundation is expressed through the standard of care, sometimes called the duty of care.
The standard of care defines what is reasonably expected of a prudent professional acting under similar circumstances and with similar knowledge and resources. It is the benchmark used to determine whether one’s conduct meets accepted norms or falls below them.
For engineers, this means exercising the level of skill and judgment that a reasonably careful engineer would apply under comparable conditions. The same principle extends to all professions whose advice or actions affect public safety and welfare. The question is not whether the outcome was perfect, but whether the professional’s conduct was reasonable given what was known at the time the service was rendered.
Duty to clients and to society
Professionals serve not only their clients but also the public. Engineers safeguard infrastructure and the environment; doctors protect health; lawyers uphold justice; accountants preserve financial integrity; and architects shape safe spaces for living and work.
This broader responsibility requires both technical competence and moral judgment. The duty of care includes the obligation to:
* Apply accepted professional principles and standards;
* Exercise reasonable care, skill, and judgment;
* Stay informed of current laws, codes, and best practices; and
* Seek guidance when work extends beyond one’s expertise.
Failure to meet these duties may amount to professional negligence if the conduct falls below what others in the field would consider reasonable under similar conditions.
Negligence and the limits of error
No profession is free from error. In fields like engineering or medicine, decisions often involve uncertainty, incomplete data, and changing conditions. The law recognizes this reality—perfection is not required, but prudence is.
An engineer—or any professional—is negligent only if they fail to exercise the care that a reasonably prudent colleague would have used under the same circumstances. Honest mistakes made despite diligence fall within the range of acceptable professional deviation.
For example, an engineer relying on soil data later found inaccurate, or a doctor acting on the best available diagnostic information, may not be negligent if they acted prudently based on what was known at the time. Negligence arises when carelessness, disregard for standards, or lack of oversight leads to foreseeable harm—such as ignoring codes, failing to verify data, or certifying work known to be unsafe.
The standard of care therefore does not demand infallibility; it demands competence, caution, and accountability.
Context Matters: Locality and Circumstance
The standard of care must be judged in context. What is reasonable in one setting may not be so in another. Relevant factors include:
* The location and available resources;
* The time and information available when decisions were made;
* The project’s complexity or risk; and
* The prevailing technology and standards of the period.
An engineer practising in T&T must comply with local codes, material availability, and regulatory expectations, which may differ from those in larger economies. What is reasonable and accepted locally may not be identical to a solution elsewhere.
Professional regulators, such as the Board of Engineering of Trinidad and Tobago (BOETT), emphasize this principle of contextual reasonableness—assessing an engineer’s conduct based on what was known and practical at the time of design or construction, not through hindsight after failure.
Ethics, judgment and lifelong learning
Technical ability alone does not define professionalism. Ethical behavior such as honesty, impartiality, fairness and dedication to public welfare is central to the Standard of Care.
Misrepresentation, conflicts of interest, or concealment of errors undermine public trust and violate professional duty, regardless of technical proficiency.
Continuing professional development (CPD) is equally vital. As industries evolve through technological advancement, regulatory changes, and shifting societal expectations, professionals must continually update their knowledge and skills. Whether in engineering, medicine, accounting, or law, staying informed on emerging standards, modern practices, and sustainability considerations is essential to maintaining competence and delivering responsible, high-quality service.
When a professional failure occurs, whether a collapsed structure, a misdiagnosis, or a flawed audit—the key question is the same: did the professional act with the care and skill that others in the field would have exercised under similar conditions?
Expert witnesses, codes and professional procedures are typically used to assess conduct. Liability arises not because the outcome was poor, but because the professional’s behavior fell below what was reasonably expected. Conversely, when decisions were sound and consistent with accepted practice at the time, even an adverse result may not amount to negligence.
The essence of professional trust
The standard of care is far more than a legal concept. It is the moral compass that defines professional life. It represents the balance between independence and accountability, between innovation and responsibility. Professionals are not expected to be flawless, but they are expected to be conscientious, capable and principled. Every report, design, opinion or certification carries an implicit assurance that the professional has exercised judgment consistent with the values of competence and integrity.
Maintaining the standard of care, therefore, is not merely about avoiding blame. It is about preserving public confidence, protecting those who depend on professional expertise, and upholding the dignity and trustworthiness of one’s calling. Ultimately, the standard of care is the promise that professionals, in all fields, will act with knowledge, fairness and care worthy of the confidence society places in them.
In an increasingly complex and fast-paced world, this commitment has become even more critical. Communities, businesses and governments rely heavily on professional guidance to make informed decisions that affect lives, livelihoods and national development. When professionals consistently uphold high standards, they strengthen confidence in institutions and contribute to a culture of accountability and excellence.
Conversely, when standards are neglected, the consequences can extend far beyond individual errors, affecting public safety, economic stability and social trust. The Standard of Care therefore remains a cornerstone of ethical practice and a defining measure of true professionalism.
Eng. Vaughn Lezama is the registrar of the Board of Engineering of Trinidad and Tobago
