Why Does Work Leave Me So Drained? Dyslexia and Mental Fatigue

You are good at your job. You understand the work, you solve problems and people rely on you. Yet by the end of the day you feel more tired than the work seems to justify, and much of that tiredness comes from emails, documents and notes rather than the job itself.

Some dyslexic adults describe exactly this. It is worth understanding why it can happen, and also what else might be going on.

Why everyday tasks can take more effort

When reading and spelling are automatic, they use little conscious attention. Where they are less automatic, the same tasks draw on working memory and concentration. Over a day this might include:

• •reading long email threads and documents carefully, sometimes more than once
• •writing and checking messages to avoid errors that others might judge
• •holding verbal instructions or meeting points in mind while taking notes
• •switching quickly between tasks and systems
• •keeping track of names, numbers and deadlines

None of this means someone is less capable. It means the route to the same result can be longer. Our guide Why Am I So Much Better at My Job Than I Am at the Paperwork? explores that gap.

The hidden cost of compensating

Many adults have spent years developing strategies: arriving early to read ahead, rewriting emails several times, staying late to check work. These strategies are often effective, but they can hide how much effort is involved, even from colleagues and managers. Worry about being noticed can add further strain.

Fatigue is not diagnostic

Feeling drained by work is extremely common and has many possible causes, including workload, poor sleep, stress, anxiety or low mood, physical health conditions, caring responsibilities, ADHD or other neurodevelopmental differences. If fatigue is persistent or affecting your health, it is sensible to speak to your GP.

Dyslexia becomes a more likely part of the picture where tiredness is clearly linked to reading and writing tasks and sits within a longer history of literacy difficulty, often going back to school.

Many adults have spent years developing strategies: arriving early to read ahead, rewriting emails several times, staying late to check work.

What can help

• •text-to-speech and speech-to-text software to reduce reading and typing effort
• •receiving agendas and documents in advance
• •written follow-ups after meetings or verbal instructions
• •templates and checklists for repeated writing tasks
• •planning demanding reading or writing for when you are freshest
• •short breaks between intensive tasks

Some of these can be put in place informally. Others may be appropriate as reasonable adjustments; see What Reasonable Adjustments Can a Dyslexic Employee Ask For?. Whether to talk to your employer is a personal decision, covered in Should I Tell My Employer I Am Dyslexic?.

If you already have a diagnosis, a workplace needs assessment can recommend specific strategies and tools for your role. Support through Access to Work may also be available, depending on eligibility.

If you have never been assessed

If this sounds familiar and you have wondered about dyslexia for a long time, the free adult dyslexia indicator check can help you reflect on the wider pattern. You can read about adult dyslexia assessments or book a free 15-minute call.