Speaking with my wife she asked if I (Electrician, Alberta, Non-Union) get sick time. I respond that's laughable. I don't think any of the construction disciplines get sick time and Vacation pay is typically paid out each pay cheque. I think it may be that the employers want have a control over an employee, ie: can't take vacation unless you set aside your vacay pay and not treat it as your hourly.
Ciao for Now