"intellectual labor" is correct and can be used in written English.
You can use it to refer to work which requires a lot of thought, planning, research, or learning. For example, "Computer programming requires a lot of intellectual labor in order to create a successful program."
"Discovery of information is a form of intellectual labor," she said.
Centuries of intellectual labor filled the Library of Alexandria, which illiterate fire burned down in a few hours.
The organizers were roundly criticized for what registered as a white-feminist appropriation of black intellectual labor.
Christian literary culture took strongly to this form of intellectual labor; at centers of book production like Caesarea, the chapter was both an intellectual tool and a style.
What followed was a crushing depression that forced him to drop out of graduate school, at Columbia, and blocked his intellectual labor for about a decade.
This involved a certain amount of anxiety, but the enormous intellectual labor that had consumed him for fifteen years was over.
It is here within the academic domain that the relationship between philosophical-religious theory and bioethics will tend to be most explicit and most welcome, although even here bioethicists need to be responsive to the above constraints should they desire the fruits of their intellectual labors eventually to have some influence on public policy.
Freed in 1980 after a worldwide campaign in which he was called "the Lech Walesa of Brazil," Mr. da Silva, along with a group of intellectuals, labor leaders, Liberation Theology advocates and environmentalists soon thereafter founded the Workers Partyy.
In addition to cutting tariffs, TPP would set rules on intellectual property, labor rights, the environment and other areas affecting cross-border trade and investment.
If approved by Congress, the pact would eliminate duties on countless goods and establish uniform rules on intellectual property, labor rights, the environment and other issues affecting trade and investment that the U.S. hopes will be a model for future agreements.
In Poland, for instance, "the unification of intellectuals and labor unions was really important," said Anne Applebaum, a columnist and the author of an authoritative book on the Soviet gulags.
