Stress rarely enters the workplace with a neon sign. Most of the time, it shows up quietly — a late arrival here, a short email there, or a colleague who suddenly stops contributing in team chats. Line managers are the first line of defence. Spotting the signs early can prevent a short-term wobble from becoming a long-term absence. 

But most managers aren’t trained clinicians. They don’t need to diagnose anyone. What they do need is confidence to start a supportive conversation and the tools to spot when something’s not right.

Red Flags to Watch For

Below are common behavioural signs that may suggest someone is struggling with stress or anxiety. One on its own might be nothing. But a pattern over days or weeks is worth exploring. 

• Mood changes (irritability, withdrawal, unusually quiet or snappy)
• Declining performance (missed deadlines, careless errors, low output)
• Increased sickness absence, especially short-notice leave on Mondays or Fridays
• Changes in appearance (tired eyes, unkempt dress, weight loss or gain)
• Avoiding social interaction (skipping lunch, turning down meetings) 

These signs are prompts, not conclusions. The goal isn’t to confront, but to check in.

How to Open the Conversation

A conversation about stress should feel safe, not like an interrogation. Avoid jumping straight to assumptions. Instead, frame your concern as an observation, and offer an open door. 

Try one of these: 

• “I’ve noticed you’ve been a bit quiet in meetings lately. Is everything okay?”
• “You’ve had a couple of Fridays off sick in the last month. Just wanted to check how you’re doing.”
• “You seemed stressed earlier this week. I wondered if there’s anything I can do to support you.” 

If the employee shrugs it off, don’t press. Just make it clear the offer of support still stands.

Give Managers Confidence, Not Just Policy

Managers don’t need to become therapists. But they do need a few basics: 

• Clear guidance on what to look for and when to act
• Authority to make short-term adjustments without jumping through hoops
• A named HR contact to escalate concerns quickly
• A reminder that a short chat today might prevent a formal process later 

Every conversation doesn’t need a solution. Sometimes, just being heard is enough to lower the pressure and keep someone engaged at work. 

Stress can’t always be prevented, but it can be caught early. This cheat sheet gives managers the green light to notice, ask, and act — before burnout turns into a fit note.

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