‘Stress stacking’ and decision fatigue reshape workplace wellbeing, experts warn 

UK workplaces are facing a new wave of pressure in 2026, with behavioural scientists warning that the way organisations manage stress, change and decision-making will have a direct impact on employee wellbeing and performance. 

New insight from CoachHub highlights three emerging trends shaping the world of work this spring, as businesses respond to rising costs, economic uncertainty and continuous transformation. 

At the centre is the concept of “stress stacking”, where multiple pressures combine, rather than occur in isolation. 

Sarah Henson, senior behavioural scientist at CoachHub, said: “Employees are no longer experiencing stress as isolated spikes. Economic uncertainty, organisational change, AI disruption and personal responsibilities are compounding into what we call ‘stress stacking’.” 

The shift has significant implications for workplace health and wellbeing. Instead of short-term stress, employees are experiencing sustained cognitive and emotional pressure, increasing the risk of burnout and reduced performance. 

Henson added that organisations will need to rethink how they respond, moving from reactive support to embedding wellbeing into the design of work itself. 

“Forward-thinking organisations will design ‘stress defenders’ into the flow of work itself, rather than fix stress after the fact,” she said. 

The research also points to a growing link between change management and wellbeing. As organisations operate in a state of continuous transformation, the way change is delivered is becoming a critical factor in both business performance and employee experience. 

Tom Runesson, head of behavioural science at CoachHub, said: “The success or failure of organisations will hinge less on the change itself and more on how that change is delivered.” 

For employers, this reinforces the importance of structured change strategies, leadership alignment and behavioural support, particularly as employees navigate ongoing disruption. 

A third trend identified is the rise of decision quality as a key leadership metric. As pressure increases, leaders are making more complex decisions, often under time constraints and cognitive strain. 

Henson said: “In this context, decision quality, not speed or volume, will emerge as one of the most important indicators of leadership effectiveness.” 

From a wellbeing perspective, this highlights the impact of cognitive load at senior levels, with leaders more likely to rely on mental shortcuts that can lead to poor outcomes if not addressed. 

The findings suggest that coaching and behavioural support will play an increasingly important role in helping both leaders and employees manage pressure, build resilience and sustain performance. 

For HR and people teams, the trends underline a shift in the workplace wellbeing agenda. The focus is moving beyond standalone initiatives towards embedding wellbeing into everyday work, leadership behaviour and organisational design. 

As businesses continue to navigate uncertainty, the ability to manage stress, support effective decision-making and deliver change sustainably is likely to become a defining factor in both employee health and long-term organisational success.