Hi bob,
It is very short of staff and ppl have had enough. When they book 11 months in advance and cant get the day off and having to organise swaps(which is very hard now cause other ATCO's value there rest days so much) ppl get pi** off.
ATCO's want a proper overtime system(call outs and standby like any other organisation has including ryanair) in place so ppl can get leave.For this to happen they need to get enough ATCO's to sign up for it therefor it will have to be a good offer to get the numbers.