Simple, he just sacks anyone he wants to, he does not need evidence of any wrong doing, he just says "don't come Monday". If that person then wants to claim for unfair dismissal then they are able too as their sacking probably would be illegal. The winner for Willie is that the compensation that BA may have to pay is capped to a maximum of approx £20,000 per staff member with significantly lesser sums going to anyone who has not worked for BA for very long. These sums of money would be less than having to 'pay' someone off to leave under VR, so people have to tread carefully.