Block, Amazon and CrowdStrike have recently announced significant job cuts. Mass layoffs can create unique financial and career challenges for workers.

Block said Thursday it's laying off more than 4,000 employees, or about half of its headcount.

Block, Amazon and CrowdStrike have recently announced significant job cuts. Mass layoffs can create unique financial and career challenges for workers.

Economists question whether such moves signal a broader shift in the labor market or simply reflect company-specific adjustments.