The phrase "a permanent task" is correct and usable in written English.
It can be used to describe a responsibility or duty that is ongoing and not temporary.
Example: "Managing the company's social media accounts has become a permanent task for the marketing team."
Alternatives: "an ongoing responsibility" or "a continuous duty."
A permanent task of the electronic industry is to find methods in order to reduce production costs which are characterised by higher mass-production output.
Ashton B. Carter, an under secretary of defense, created a permanent task force that is working to rebuild the eroded American capability to deter nuclear attack, including nuclear EMP.
ALBANY — In one of his first major initiatives as the state's top jurist, Jonathan Lippman, the chief judge of New York's Court of Appeals, said he would create a permanent task force to examine wrongful convictions and recommend ways to minimize them.
Finding a solution for this situation is a permanent task of researchers, which involves not only finding new and advanced analytical methods to identify quality and quantity of contaminants, but also applying complex statistical methods that allow an overall assessment of the interaction of these contaminants in the food chain and the health risk associated with their consumption by humans.
Using a musical cue, he programmed Dolores to carry out a more permanent task: in flashback, we see him sitting in a chair in the dusty street.
He offered commentary from the pages of the association's monthly magazine, Long Island, and in conversations with the leaders and members of the association's subcommittees that make up a network of permanent task forces dealing with such chronic issues as transportation, the environment and the needs of small businesses.
Justice Minister Mich? Alliot-Marie and Foreign Minister Bernard Kouchner said France planned to create a permanent judicial task force to try cases of genocide and crimes against humanity.
An economy is assigned a score of 1 if fixed-term contracts are prohibited for permanent tasks and a score of 0 if they can be used for any task.
Workers in this factory have permanent tasks depending on the qualification of the worker.
It has a permanent anti-terrorist task force headed by magistrates whose only mandate is to investigate acts of terrorism and potential terrorist threats.
