For years, workers’ compensation has been the casualty market’s dependable bright spot, delivering strong profitability, steady reserve releases, and consistent rate reductions even as commercial auto and liability lines struggled with deteriorating results.
That dynamic may now be starting to change, with insurance executives warning that a combination of rising claim severity, medical inflation, and workforce demographic shifts is creating new pressures that could gradually overhaul underwriting and claims strategies.
The underlying reality of this shift is positive news: more severely injured workers are surviving and living longer, thanks to advances in trauma care and medical technology. But longer lives mean longer-tail claims and decades of treatment costs that are far harder to price than the declining injury frequency carriers have grown used to.
"If an employee makes it to an emergency room with a severe injury, their life will most likely be saved today," said Bill Chepulis (pictured below), head of US large casualty national accounts at Zurich North America. "That might not have been the case five or ten years ago. That's a great thing. But it presents fundamental underwriting challenges.”
Chepulis noted that favorable development from pre-COVID accident years helped support “consistent rate decreases quarter after quarter for close to five years in a row.” However, the factors that drove those results are beginning to evolve.
While claim frequency has continued to trend downward, severity has emerged as the industry's primary challenge.
Neil DeBlock, Zurich’s head of workers’ compensation claims, said the industry is beginning to see signs that profitability may be moderating after more than a decade of favorable results.
“Over the last 12 or 13 years, workers’ comp has been very profitable across the industry,” DeBlock said. “But rates have been dropping all those years, and now we’re starting to see increases in some states because we’re beginning to see deterioration in results across the industry.”
Demographic trends in the US are also adding further complexity. According to Claude Howard (pictured below), vice president of workers compensation claims at Travelers, the industry has been tracking longer recovery times since the pandemic, driven largely by an aging workforce and increasing medical comorbidities.
Workers aged 60 and older now account for 16% of Travelers’ claims, a growing share of the overall claim population. Older injured workers often require treatment for underlying conditions before surgeries or rehabilitation can proceed effectively, extending claim durations and increasing costs, said Howard.
“The comorbidity aspect is what challenges us the most,” he said. “In order to effectively do a surgery or provide the care somebody needs, you might first have to address an underlying condition. Otherwise, treatment may not be as effective because of that comorbidity.”
Travelers said that automation has helped reduce overall injury frequency by reducing direct human involvement. But automation can be a double-edged sword.
“Automation has helped reduce injury frequency, but when injuries do happen, it's often because someone bypassed safety protocols,” Howard said. “I can't stress enough the importance of safety training. Even with an aging workforce, experience doesn't automatically translate into expertise in a new role.”
Both carriers see medical inflation feeding severity, and Chepulis stressed that it does not move in a straight line. "It's chunky. It happens in big steps," he said, pointing to hospital capital costs for equipment such as MRI machines that are markedly higher post-pandemic and only now flowing through to claims.
DeBlock added that the cost driver is often the volume of treatment rather than the procedure: more physical therapy sessions per claim, for example.
Litigation is another emerging strain. DeBlock said certain jurisdictions — notably California, which he estimated represents roughly a third of claims volume for most carriers — are seeing more occupational-exposure allegations attached to discrete injuries once attorneys get involved, dragging claims out and raising costs.
As profitability pressures build, insurers said claims execution will play a larger role in determining outcomes.
DeBlock emphasized that employers should focus on claims organizations that can actively manage claim outcomes rather than simply administer files. “What customers really need isn’t someone who simply manages claims,” he said. “they need someone who manages outcomes.”
Fast reporting remains one of the most effective tools available. Delays of even a few days can increase the likelihood of litigation, treatment complications, and prolonged disability periods, according to both Zurich and Travelers.
Technology is also becoming a larger part of the claims toolkit. DeBlock said predictive analytics and AI-driven triage systems now help carriers identify potentially severe claims earlier and route them to specialized resources more quickly.
For brokers and buyers, the most immediate implication may be a gradual shift in pricing expectations.
The industry has already revised its post-COVID loss-ratio assumptions downward, which means even stable performance will no longer throw off the reserve releases that quietly subsidised casualty portfolios for years. Chepulis predicted that the days of guaranteed rate decreases "are largely behind us." While he does not expect the line to turn unprofitable, he believes post-COVID loss ratios will trail pre-pandemic levels, leaving less margin to offset trouble elsewhere.
"All it takes is a few bad outcomes and those savings disappear,” said Chepulis.
