Jack Dorsey warns Block employees of coming job cuts: ‘The growth of our company has far outpaced the growth of our business.’

In a note to staff sent Thursday and viewed by Insider, Jack Dorsey, the CEO and founder of Block, said the company’s growth has not matched its number of employees.

“It’s not sustainable,” Dorsey wrote. Block operates Square, the popular platform for business payments, as well as Cash App and Tidal.