IQ of 60 Justifies 100% Functional Disability Assessment, Gauhati HC Dismisses Insurer's Appeal Against Rs 20 Lakh Motor Accident Award

The Gauhati High Court upheld a tribunal's finding that an IQ of 60, indicating mild intellectual disability, renders a motor accident victim incapable of any gainful employment, warranting 100% loss of earning capacity.

The Gauhati High Court has dismissed an appeal filed by Oriental Insurance Co. Ltd. challenging a Motor Accident Claims Tribunal award of Rs 20,00,000 along with interest at 6% per annum. The insurer's core challenge was that the tribunal had assessed the functional disability of the injured victim at 100% without adequate medical foundation, particularly without directing an examination by a neurologist or neurosurgeon as the medical board itself had recommended. Justice Mridul Kumar Kalita, sitting singly, found that the victim's intelligence quotient of 60 — assessed by the medical board and left uncontroverted on record — destroyed the core cognitive faculties required for any gainful employment, making the 100% functional disability finding defensible.

The Accident and the Claim Before the Tribunal

On 18 February 2011, at around 9:30 P.M., Zakir Hussain Talukdar was riding a motorcycle when a truck bearing registration number AS-10-3439, driven in a rash and negligent manner, dashed against the motorcycle. Zakir Hussain sustained grievous injuries, including a head injury with fracture of the right femur.

His father, Fakar Uddin Talukdar, the present respondent No. 1, filed an application under Section 166 of the Motor Vehicles Act, 1988 before the Motor Accident Claims Tribunal, Karimganj, claiming compensation for his son's injuries. The case was registered as MAC Case No. 93/2018.

Oriental Insurance Co. Ltd., the insurer of the offending truck, contested the claim. Among the defences raised was that the offending truck was not covered under a valid insurance policy. The truck's owner did not appear before the tribunal and proceedings continued ex-parte against him. The claimant examined four witnesses and exhibited several documents, including the medical board's injury report. The insurance company examined no witness in its defence.

The tribunal, by judgment and award dated 16 June 2017, awarded Rs 20,00,000 with interest at 6% per annum, assessing the victim's loss of earning capacity at 100%.

The Insurer's Challenge on Disability Assessment

Oriental Insurance appealed under Section 173 of the Motor Vehicles Act, 1988. Its counsel, Mr. S. Dutta, raised two interconnected arguments directed at how the tribunal had calculated functional disability.

The medical board that examined the victim formally assessed his permanent physical disability at only 10%, arising from a 2 cm shortening of the right lower limb. The doctor who appeared as the fourth witness before the tribunal was a member of that medical board and confirmed this finding. Yet the tribunal assessed functional disability at 100%. The insurer argued this amounted to a grave error in methodology.

The medical board's report also recorded that the victim's intelligence quotient had been reduced to 60, and the board recommended further evaluation and assessment by a neurologist and neurosurgeon. The insurer argued that the tribunal, instead of directing such a specialist examination, had on its own presumed total incapacity and assessed 100% loss of earning capacity — an approach the insurer said was unsupported by expert medical opinion.

Additionally, the insurer pointed out that the tribunal had itself recorded that the victim had not adduced evidence of actual or gainful employment before the accident. Despite that, the tribunal had arrived at 100% loss of future earning capacity.

Relying on Raj Kumar v. Ajay Kumar and Anr., reported in (2011) 1 SCC 343, the insurer's counsel submitted that the Supreme Court had laid down a three-step formula for assessing functional disability. The tribunal was required, first, to ascertain what activities the claimant could and could not perform despite the disability; second, to ascertain the claimant's vocation, profession, nature of work before the accident, and age; and third, to determine whether the disability resulted in total incapacity or only a partial or reduced capacity to earn.

The insurer argued the tribunal had bypassed this structured analysis and asked for the matter to be remanded for specialist neurological examination of the victim.

The Claimant's Defence and the Precedent on IQ-Based Disability

Respondent No. 1's counsel, Mr. G. Uddin, defended the award on the ground that the tribunal had not merely relied on physical disability but had considered both the physical limitation and the intellectual impairment together. He pointed out that a normal person's intelligence quotient ranges between 90 and 150, and the victim's IQ of 60 placed him well below that range.

He relied on the Supreme Court's decision in R. Halle v. Reliance General Insurance Company Limited, reported in 2026 INSC 260, where the Apex Court accepted that an IQ of 65 falls within the category of mild intellectual disability and assessed functional disability at 100% considering cognitive impairment along with other physical limitations. He argued that since the present victim's IQ of 60 was even lower than the 65 considered in that case, the tribunal's conclusion on 100% functional disability was well-founded.

He also resisted the remand request. The accident occurred in 2011, and by the time of hearing, 16 years had elapsed. Sending the matter back for fresh neurological examination at this stage, he submitted, would not serve the ends of justice.

How the Court Reasoned on the IQ and Functional Disability Question

Justice Kalita identified the singular question before the court: whether the tribunal had correctly assessed functional disability at 100% based on the intellectual impairment that had reduced the victim's IQ to 60.

The court noted that the medical board's report — exhibited as Exhibit-19 in the tribunal proceedings — documented head injury with fracture of right femur, a permanent physical impairment of 10% due to 2 cm shortening of the right lower limb, an IQ of 60, and a recommendation for further neurological evaluation. The court observed that although the board had recommended specialist assessment, its own finding that the IQ was 60 had not been challenged and remained uncontroverted on record.

Relying on R. Halle v. Reliance General Insurance Company Limited (2026 INSC 260), the court accepted that an IQ of 60 falls within the range of mild intellectual disability. It held that an IQ of 60 “destroys the core cognitive faculties required to manage a business independently.” The neurological damage, the court found, had rendered the victim incapable of resuming his previous vocation or engaging in any gainful employment.

The court then addressed the insurer's reliance on Raj Kumar v. Ajay Kumar and Anr. (2011) 1 SCC 343. It accepted the three-step formula as the governing standard for assessing functional disability — examining what the claimant can and cannot do post-injury, the nature of pre-accident vocation and age, and whether the result is total or partial incapacity. However, applying that framework to the facts, the court found the tribunal had not departed from it. The tribunal had considered the medical board's IQ assessment, the victim's physical injuries, and evidence that he was doing business to earn his livelihood before the accident, even though no income evidence was produced. The court held that a person with an IQ of 60 cannot be employed in any employment, making the 100% functional disability finding consistent with the Raj Kumar formula rather than in violation of it.

On the procedural question of whether the tribunal should have directed specialist neurological examination before arriving at its conclusion, the court held that the uncontroverted IQ finding of 60 was sufficient foundation. The insurer had not challenged that assessment before the tribunal and had not placed any counter-medical evidence on record. The tribunal's decision to proceed on the basis of available evidence was not faulted.

The court also recalled the character of the statute itself. The Motor Vehicles Act, 1988 is a beneficial and welfare-oriented legislation aimed at ensuring expeditious relief and just compensation to accident victims. Any interference with a reasoned tribunal award must be consistent with that object and supported by sound judicial reasoning. The court found neither ground satisfied here.

Outcome

The Gauhati High Court dismissed MACApp./67/2018 on 27 July 2026. The impugned judgment and award dated 16 June 2017 passed by the District Judge-cum-Member, Motor Accident Claims Tribunal, Karimganj in MAC Case No. 93/2018 stands. The compensation of Rs 20,00,000 with interest at 6% per annum awarded to the claimant is confirmed. The court directed that the records of MAC Case No. 93/2011 be returned to the concerned Motor Accident Claims Tribunal along with a copy of the judgment.