Think about it, Jellyfish - an employed captain will get a day off payment of £250net plus the flight pay. They'll do the same hours over the month, and thus the final flight pay will be the same, but they get the day off payments too. For contractors, that doesn't apply, and so the captains tend to refuse. Contract FOs historically would accept because if they didn't come in, they'd lose out on pay and they were only flying c600 hours a year and needed to generate as much extra as possible. That's very different at the moment.