Re: "The IT manager turned up clutching a clipboard"
One company I worked for (not a small company) had a policy of putting the lowest 15% performers of an entire department on a disciplinary action at the end of every month. People who got fingered two months in a row were fired.
Most people who worked there actually did a decent job, and given their "targets" were way above the actual amount of work they were given to do, the performance statistics were largely random. This effectively turned the entire policy into a game of Russian Roulette. Strangely, the performance of the department tanked and we ended up losing on average 4 staff every Friday for an entire summer.