The phrase "an essential duty" is correct and usable in written English.
It can be used to describe a responsibility or task that is crucial and necessary in a particular context.
Example: "As a team leader, ensuring clear communication among team members is an essential duty."
Alternatives: "a vital responsibility" or "a critical obligation."
Also clear is that basic maintenance is an essential duty of a property owner.
Sen. Jon Tester (D-Mont). suggested Gianforte had shirked an essential duty to voters by refusing to answer Jacobs's question.
The Qur'an condemns usury and requires zakah (almsgiving) as an essential duty to prevent wealth being accumulated only among the rich.
Masri said that ExpressJet acknowledged serving alcohol was "not an essential duty or function of flight attendant" by granting the religious accommodation.
But if officers work only three days a week, Mr. Buracker said, they would often not be available to go to court, an essential duty in everything from settling traffic tickets to felony trials.
As usual, Enzo will watch the bout from his son's corner, something he admits is difficult for him as a father to do but as a coach he continues to see as an essential duty.
The first essential duty of a state is defending its citizens against foreign incursions and threats.
But "The Crown" knows well that selling such myths is an essential job duty.
They argue that they must be protected in order to ensure that they can fulfil an essential public duty: guaranteeing customers a universal standard of service at a single price, regardless of where they live.In fact, this so-called Universal Service Obligation USOO) is accepted by almost everyone in the industry as a legitimate concern.
Accepting fair criticism, then, is an essential professional duty.
While I recall my parents voting in major elections, it was not emphasized as an essential civic duty to my siblings and me.
