Hard to impose a change in working practices on a workforce who are sat at home.12000 people failing to report for duty means absolute disaster for BA.the operation ceases,utter chaos ensues,costs to the company are incalculable.do not underestimate the power of the employees to influence outcomes.just look at past cabin crew disputes,without exception the company has been damaged,financially and have a go managers have paid the price.ok,so impose the threats and just see what happens,i dread to think of the consequences.