This would be the first Off-Broadway nonprofit theater company to have a union agreement covering production classifications.

The deal will be scrutinized by New York’s other Off Broadway theaters, which the International Alliance of Theatrical Stage Employees has been working to unionize.

Off Broadway’s much-honored Atlantic Theater Company and the International Alliance of Theatrical Stage Employees have reached a tentative agreement that could see the Atlantic become the first-ever not-for-profit theater company producing solely Off Broadway shows to have such a union agreement.