@forrestgimp
Whereas it may be a part responsibility to request the correct amount of leave, the manager should not have authorised the request based purely on the dept rota. The whole point of handing in a holiday request form, is to gain authorisation for the requested dates from the dept manager. That manager should immediately check the holiday diary, and their part copies of all requests submitted and authorised, either at the holiday planning meeting, or a later date. Hence the reason they are given the 7 day timescale to enable an input on the system and a written reply to the request, also the reason a holiday is automatically authorised if they fail to reply in the set timescale, which would seem tesco deem as an acceptable timeframe for a manager to perform their role using the tools provided.
To put the onus on the employee, in that they have sole responsibility to book the correct amount of leave, kind of makes the holiday booking meetings, written requests, to their manager following the correct procedures somewhat pointless.
In my opinion, the buck stops with the manager, who should be apologising for being too lazy and incompetent to take the time needed to basically look in a book, and input on the system. All of ten minutes...tops!