This provision, extended in every contract since, is a non-negotiable demand of the drivers.

Reliable room service, morning newspapers and drinkable coffee round out our list of non-negotiable demands.

In those days everybody had to have a non-negotiable demand.

The two competing sides regularly call for unity as a preamble to listing their non-negotiable demands.

When irritated, Middle Westerners don't issue non-negotiable demands, picket your house or send death threats.

America believes that all people are entitled to hope and human rights, to the non-negotiable demands of human dignity.

In other words, the small states made a non-negotiable demand.

But the Americans have insisted all along on one non-negotiable demand: that Iran must suspend its enrichment activities.

"This is it," she said in early July, delivering her non-negotiable demands.

They were too busy issuing non-negotiable demands.