My dad has been diagnosed with cancer and has had a major operation which is hopefully curative. This has meant an extended absence from work - about 6 months in all - today he has been sacked, without warning. He was expecting to return to work in about three weeks time. His job was driving and dvla guidelines would have prevented him from an earlier return because of the pain he was experiencing. He has worked for this employer for about 40 years. He was so looking forward to returning to his pre-cancer life - I can't believe they've done this to him 
. Any advice on next steps - I can't believe that this is ok!