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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
Unfit for work
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "Unfit for work" is correct and usable in written English.
It can be used to describe someone who is not able to perform their job duties due to health issues or other reasons. Example: "After the medical evaluation, it was determined that she was unfit for work and needed to take a leave of absence."
✓ Grammatically correct
News & Media
Academia
Science
Alternative expressions(5)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
58 human-written examples
("Health: poor," his parole officer of the moment reported a few days later. "Unfit for work").
News & Media
Less than 10% of claimants now receive the higher rate of ESA, for those deemed genuinely unfit for work.
News & Media
They deemed me unfit for work and medevac'ed me from Bangkok back to the United States for treatment.
News & Media
Those in the Work Related Activity Group who receive Employment Support Allowance are disabled people who've been independently assessed as being unfit for work.
News & Media
"The purpose of entitlement to sick leave is different, since it enables a worker to recover from an illness that has caused him to be unfit for work".
News & Media
Men unfit for work were ordered to work and sometimes had to be carried to the work site on a cart; there was insufficient food and clothing.
The purpose of entitlement to sick leave is different, since it enables a worker to recover from an illness that has caused them to be unfit for work".
News & Media
Though I was deemed unfit for work at a medical (not a title I took pride in), it was still a long time before I received any money.
News & Media
Even Atos might consider declaring him unfit for work after taking a bullet to the head but Tintin is back on the job and apparently off his trolley.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
2 human-written examples
Over 70%% classify patients as 'unfit for work'.
Science
For initial certificates relating to mental health conditions, up to 94 % recommend patients as 'unfit for work' [ 11].
Science
Expert writing Tips
Best practice
When describing someone's employment status, use "unfit for work" to indicate they have been professionally assessed as unable to perform their job due to health reasons.
Common error
Avoid using "unfit for work" when describing temporary conditions like a cold or short-term injury. Instead, use phrases like "on sick leave" or "taking time off to recover". "Unfit for work" generally suggests a more prolonged or permanent inability to work.
Source & Trust
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "unfit for work" functions primarily as an adjective phrase describing a state of being unable to perform job-related tasks. Ludwig AI confirms its usability in written English. It often follows verbs like 'deem', 'declare', or 'consider', indicating a judgment or assessment of someone's capacity to work.
Frequent in
News & Media
60%
Academia
20%
Science
15%
Less common in
Wiki
3%
Formal & Business
2%
Encyclopedias
0.01%
Ludwig's WRAP-UP
In summary, the phrase "unfit for work" is a commonly used adjective phrase to describe someone's inability to perform their job, usually due to health or medical reasons. Ludwig AI confirms its proper usage in English. It is frequently employed in formal contexts, such as medical assessments, employment benefits discussions, and legal proceedings. While often used interchangeably with similar phrases like "unable to work" or "not fit for duty", it's essential to differentiate it from temporary conditions like "on sick leave". Its prevalence across various sources, including news, academic, and scientific domains, underscores its importance in both professional and public discourse.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
unable to work
Directly indicates an inability to perform work-related tasks.
incapable of working
Emphasizes a lack of capacity or qualification for work.
not fit for duty
Often used in military or formal contexts to describe someone not ready to perform their assigned tasks.
medically excused from work
Specifically indicates that a medical condition prevents someone from working.
deemed ineligible for employment
Focuses on the formal assessment process that determines ineligibility.
not in working condition
Can refer to either a person or a piece of equipment; implies a state of disrepair.
certified as unable to work
Highlights the certification process by a medical or professional authority.
on sick leave
Indicates a temporary absence from work due to illness or injury.
permanently disabled
Suggests a long-term or irreversible condition that prevents work.
declared unfit to practice
Often used in professional fields like medicine or law to indicate someone is no longer allowed to work in their profession.
FAQs
How can I use "unfit for work" in a sentence?
You can use "unfit for work" to describe someone who is unable to perform their job duties due to health issues or other reasons. For example: "After the medical evaluation, it was determined that she was "unfit for work" and needed to take a leave of absence."
What can I say instead of "unfit for work"?
You can use alternatives like "unable to work", "incapable of working", or "not fit for duty" depending on the context.
What's the difference between "unfit for work" and "on sick leave"?
"Unfit for work" generally implies a more serious or long-term inability to work, often determined by a professional assessment. "On sick leave", on the other hand, suggests a temporary absence from work due to illness or injury.
When is it appropriate to use "unfit for work"?
Use "unfit for work" when someone has been officially assessed as unable to perform their job duties due to a medical condition or other significant reason. This phrase is often used in the context of employment benefits or disability claims.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested