The people on 70% contract when offered 100% contract have the choice of having the winter off and starting their new 100% contract at the start of the new season or starting straight away. There is no back pay if they choice to start 100% contract immediately. There is no pressure either way. I am aware of number of pilots who have taken the option of starting their 100% contract in the new season and having the winter off. Nobody at Jet2 works 100% for 70% pay.