The performance assessment is what is biased and is completely manipulated to achieve a "valid" layoff for "any" employee that a manager does not like or want any longer. The Performance Assessment is totally subjective and any objective metrics or data can be skewed according to any bias a manager has. So any strategic decisions based on this will ultimately be a "loss" for the organization. The organization has to "trust" its management however this is a tool that can be horrendously abused by poorly people skilled, incompetent managers.
Originally posted by @TUEgYHu-3nuu.