The phrase "longstanding work" is correct and can be used in written English.
You can use it to refer to a job, project, or activity that has been done for a long time. For example: "The company is known for its longstanding work in protecting the environment."
Two Blue Peter studio dogs, Bonnie and Endal, have also won gold badges for their longstanding work.
The research grows out of Türeci's longstanding work on mathematical models that describe the behavior of lasers.
It has been a special pleasure these past weeks to learn about her longstanding work with the marvelous Red Harlem Readers.
Ms. Malkin's show is an offshoot of her broader interest in environmental issues, which she expresses in part through her longstanding work with the Natural Resources Defense Council, an advocacy group that she serves as a trustee.
"While Imam Feisal's vision has a global scope and his ideals for the Cordoba movement are truly exceptional, our community in Lower Manhattan is local," said Mr. Gamal, referring to the imam's longstanding work in promoting interfaith understanding.
Calott's longstanding work and research on informal urbanization patterns and social justice issues at the US-Mexico Borderlands resulted in FRONTERA / BORDER: 7th Consurso Internacional ARQUINE, an international design Congress convened in Mexico City.
A longstanding working relationship with the Lunts was established.
Members of the merchant class understand that with democratic change they run a risk of losing privileges that they enjoy under regimes with whom they have established longstanding working relationships.
A CBI report late last year showed that "1.3 million people suffered from new or longstanding work-related illnesses" in the previous year and "up to 5 million workers are thought to suffer from a mental health condition each year".
By running as an economic populist, Trump appeals to longstanding working class grievances that neither party had taken seriously enough, least of all the Wall Street wing of the Democrats.
The online versions of the articles have since been removed and replaced with the apology, which says the five were "internationally respected for their longstanding global work to reduce smoking and their work on the issue of nicotine harm reduction".
