Since Elon Musk took over Twitter, there have been many changes and a severe reduction of the company's staff. Earlier this week, Musk delivered an ultimatum to the remaining workforce demanding "hardcore" work, and this caused some workers to quit voluntarily. However, there is a population of foreign workers who cannot leave the company even if they wanted to because doing so would force them to leave the US due to the nature of their high-skilled employment visas, known as H-1B. As the tech industry overall grapples with mass layoffs, workers with temporary employment visas are the most vulnerable to being cut and have a limited, 60-day window to seek new employment once they have been let go.
See "Foreign workers in the US disparately impacted by Twitter and other big tech layoffs due to their temporary employment visas", Donie O'Sullivan, Priscilla Alvarez, and Oliver Darcy, CNN, November 18, 2022