Amazon has been pressuring managers to identify low-performing workers to push out of the company using performance-improvement plans, according to a series of leaked Slack messages obtained by Insider.The messages were between managers from numerous divisions, including Amazon Web Services, Pricing, and Compliance.As fears of a recession have prompted tech giants to tighten their belts, some companies have turned to so-called "quiet layoffs" to reduce head count by increasing the number of workers on some form of PIP.Amazon has also been attempting to slash staff in the wake of disappointing third-quarter earnings and what its HR chief called "an unusual macroeconomic environment."This week, it began the largest corporate layoffs in its history, starting by slashing employees from the Devices division and offering buyouts to recruiters."