The aim is not to document performance generally. The aim is to counteract the natural tendencies of managers to soften their critiques in conversation and of employees to underestimate their poor performance by memorializing feedback in writing.
It's better for employees because it makes it easier for their managers to paint a clear picture of how they need to/can improve, and it's better for managers because in the case they eventually do need to let the employee go, they've already set the expectation clearly, so there are no surprises. As a bonus, there's a paper trail for HR.
It's better for employees because it makes it easier for their managers to paint a clear picture of how they need to/can improve, and it's better for managers because in the case they eventually do need to let the employee go, they've already set the expectation clearly, so there are no surprises. As a bonus, there's a paper trail for HR.