Have to ? Why, if they dodge it by taking annual leave, are the Union 'heavies' gonna break their legs or something ? I though this was a (somewhat) free country.If they are members of the union they will have to participate in the industrial action. Taking annual leave is the same as passing the picket.
I reckon Cowan should hire Maggie as a consultant/strike-breaker. She's got more balls than him for the job anyway I reckon.