According to Bloomberg, notifications went out beginning in the early morning hours, with Singapore-based workers among the first to be informed.
In addition to the cuts, Meta said in April it would cancel plans to hire 6,000 people and shift 7,000 other employees into AI workflow-related roles.
In a memo to staff Wednesday, posted by Business Insider, Zuckerberg expressed thanks to departing employees and sought to reassure those remaining.
"It's always sad to say good-bye to people who have contributed to our mission and to building this company," he wrote. "I feel the weight of that."
Zuckerberg said he did not expect additional company-wide layoffs this year, and acknowledged the company had fallen short in its communications with staff.
