The phrase "at a necessity" is not correct in standard written English.
The correct expression is "out of necessity," which is used to indicate that something is required or essential.
Example: "She took the job out of necessity, as she needed to support her family."
Alternatives: "due to necessity" or "because of necessity."
They perceived their presence at work as a necessity, making them determined to work despite pain.
But Dr Saffo's point is that anthropologists are now regarded as a necessity at such firms.The use of anthropological techniques in industry goes back to the 1920s, when a group of researchers, including Lloyd Warner of Harvard University, conducted several pioneering experiments at a factory in Cicero, Illinois, examining the impact of pay, working conditions and other incentives on productivity.
Now, trying to get people to look at healthy food as a necessity and worth the extra dollars will require a huge shift in mindset.
The young are more likely to consider a cellphone as a necessity, while at the same time seeing little need for landlines.
He gets by on nips of brandy and gin - a sharpener at breakfast, a reward at lunchtime, a necessity at dinner.
In war zones, such as Afghanistan, there can be friction between development types and the military whose protection is at once a necessity and a liability.
At first a necessity of the production schedule to largely remove the lead actor from the equation back with Love and Monsters, the challenge it presents to writers can be an opportunity to do something as majestic as Blink.
In a summer when blue-sky days have become a distant memory (we're pretty sure there were a couple in June), dressing for weather that is actually quite cold but pretends to be otherwise has become something of an art – or at least a necessity.
Training at altitude is a necessity, as it increases the body's ability to carry oxygen, making him quicker.
So in the short term at least, bushmeat remains a necessity for some.
