He’s working incredibly hard, it’s affecting his health and happiness, and he’ll lose some of his holiday if he doesn’t take it soon. But he won’t do it

I’m worried about my work colleague. He is working incredibly hard on an emotionally draining project, and I know it’s affecting his health and happiness. He is owed a huge amount of holiday – some of which he will lose if he doesn’t take it soon – but he is so absorbed in the project he’s working on that he says he can’t put it aside. How can I support him, and help convince him it would be best to take some time off?

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