Help with a taco problem please

Ihave just had 30 infringments for not showing at least 5 mins other work for daily checks and had to sign every one :open_mouth:
I wanted to tell tm he was a complete ā– ā– ā– ā–  and talkin a load of bollox but iā€™m only ion as a casual and need the work :laughing:
Just out of interest does any one know if there is a set time you can be on a casual contract or can it be indefinate?