Looking on the internet deeply has found these results:

He is a man of great work. is the most popular phrase on the web.

He is a man who made great work. 10 results on the web	He is a man of great work. 14 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	Brian is not only as loyal a friend/colleague you could ever hope to have, he is a man of great work ethic with an incredible knack for minor detail. Brian is a�... He is a man of great work ethic and integrity. I highly recommend him to anyone who requires the services of an experienced Oracle recruiter. See more See�... ... all the changes that he will make. He is a man of great work ethics, compassion, honesty and always for the greater good, action with good intentions. Was this review �? Useful; Funny; Cool. Raian Rahman, Stock Market Club President He is a man of great work ethic who can lead the school in the right direction.

He is a man who made great work.

10 results on the web

He is a man of great work.

14 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

Brian is not only as loyal a friend/colleague you could ever hope to have, he is a man of great work ethic with an incredible knack for minor detail. Brian is a�...
He is a man of great work ethic and integrity. I highly recommend him to anyone who requires the services of an experienced Oracle recruiter. See more See�...
... all the changes that he will make.
He is a man of great work ethics, compassion, honesty and always for the greater good, action with good intentions. Was this review �? Useful; Funny; Cool.
Raian Rahman, Stock Market Club President He is a man of great work ethic who can lead the school in the right direction.