one of them there days ...some things are soooooooo predictable

Formal request was made to change working hours ( 5 days into 4)
Request refused with explanation and paragraphs included from their Job Description as to why this was not feasible or appropriate.
Within 2.4 milliseconds formal grievance lodged with Union saying I am picking on them and discriminating blah blah blah and as a result they are extremely stressed and seeking an appointment with their doctor urgently.
I wonder what time I will receive the call tomorrow to inform me they are going off sick ????