Nacho Fernández Suárez winces when he recalls the eight years he spent as an administrative assistant doing odd errands in Argentina’s Congress. He was part of an inclusion program for people with disabilities.

“They bullied me, they pushed me, they treated me poorly,” said Mr. Fernández Suárez, 34, who has an intellectual disability. He was also bored, he added, barely given any work to do.

Boredom is not much of a problem these days for Mr. Fernández Suárez, who is part of the staff at a popular restaurant in Buenos Aires that is believed to be the first eating establishment in Argentina largely operated by neurodivergent individuals.

The restaurant, Alamesa, is seeking to change the paradigm of what inclusion in the workplace means for people who often do not have a clear path to employment after their formal schooling ends.

Even though Mr. Fernández Suárez earns about one-third of what he did as an assistant, his mother, Alejandra Ferrari, said he was thrilled because he “feels indispensable.” (The program in Argentina’s Congress he was hired through has been dissolved.)