I don't work (and have no intention of working) for EZY - I am a mere bit of Self Loading Freight.
However, I was interested in the comment that EZY would have to buy the holidays off you.
It's a common misconception that holidays should be either taken or paid for. It's actually illegal to pay staff for not taking holidays. The working time directive is in place to ensure people take their holidays (ie time away from work). It is not an opportunity for an employee to sell their holidays to their employer, nor is it an avenue for the employer to get out of actualy giving the employee time off.
If your Union Rep is any good, then maybe get him/her to look into it.