Used and loved by millions
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
their work is
Grammar usage guide and real-world examplesUSAGE SUMMARY
'their work is' is a valid and usable part of a sentence in written English.
You can use it when referring to the work of a group or collective. For example, "Their work is essential to the success of the project."
✓ Grammatically correct
News & Media
Science
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
59 human-written examples
Yet their work is distinct.
News & Media
Their work is strictly monitored.
News & Media
"Their work is not flat.
News & Media
Their work is dynamic and ever evolving.
News & Media
Their work is far from over.
News & Media
Their work is finally paying off.
News & Media
"But their work is so real.
News & Media
Their work is hidden.
News & Media
Their work is "soft".
News & Media
Their work is violent.
News & Media
Their work is indispensable".
News & Media
Expert writing Tips
Best practice
Use "their work is" to introduce a descriptive or evaluative statement about the group's work, providing context or insight for the reader.
Common error
A common error is using "their work is" without a clear antecedent for "their". Ensure that the group you are referring to is explicitly mentioned earlier in the sentence or paragraph. Avoid ambiguity by clearly stating who "their" refers to.
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "their work is" serves as a subject-verb construction, introducing a description, evaluation, or characteristic of the work performed by a group or entity. As Ludwig AI confirms, it's a valid and commonly used structure. Examples in Ludwig show it used to describe the nature, quality, or impact of a group's activities.
Frequent in
News & Media
63%
Science
27%
Formal & Business
5%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "their work is" is a grammatically sound and versatile phrase used to introduce information or evaluations about the work of a group. As Ludwig AI points out, it is a valid English structure. Its frequent occurrence in news and scientific publications, as shown by Ludwig, indicates its broad applicability and neutral tone. When using this phrase, ensure a clear antecedent for "their" to avoid ambiguity. Remember to adapt the following descriptive adjectives, selecting suitable language based on the context and desired level of formality.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
their contributions are
Emphasizes the value and positive aspects of their work.
what they do involves
Focuses on the activities involved, altering the verb and adding 'what'.
their area of focus is
Highlights the area or subject of their work.
the work they do entails
Emphasizes the implications and results of the work.
their efforts result in
Highlights the results of their work.
they are responsible for
Highlights the responsibilities associated with their role.
they dedicate their time to
Highlights the time commitment to the work.
the output of their labor is
Shifts focus to the outcome or result of their work.
the nature of their duties is
Focuses on the characteristics and essence of their duties.
they perform
Simply describes the act of doing the work.
FAQs
How can I use "their work is" in a sentence?
Use "their work is" to describe or evaluate the activities, efforts, or output of a group or collective. For example, "Their work is essential to the success of the project" or "Their work is published in The Lancet".
What are some alternatives to "their work is"?
You can use alternatives like "what they do involves", "their contributions are", or "they are responsible for" depending on the context.
Is it correct to say "there work is" instead of "their work is"?
No, "there work is" is grammatically incorrect. The correct possessive pronoun is "their", which indicates belonging to them. "There" indicates a place or existence.
What is the difference between "his/her work is" and "their work is"?
"His/her work is" refers to the work of a single individual, while "their work is" refers to the work of a group or collective. Use the appropriate pronoun based on whether you are discussing an individual or a group.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested