I assume this doesn't go on in the UK, as it would fail to meet the ACAS code on performance management, and likely lead to successful constructive dismissal or

I assume this doesn't go on in the UK, as it would fail to meet the ACAS code on performance management, and likely lead to successful constructive dismissal or unfair dismissal claims. "If issues do arise, employers should make the employee aware of the shortfall in their performance as soon as possible. The employee should then be given a reasonable timescale to improve. Employers should provide their employee with any relevant support and training in order to reach the required performance standard. They should then monitor and review the employee’s progress throughout the period assigned for improvement."