If you're in tech, the way to do avoid this is: - Develop mission critical systems. - Make sure no one else understands them. - When you're gone, break them

If you're in tech, the way to do avoid this is: - Develop mission critical systems. - Make sure no one else understands them. - When you're gone, break them so your employer suffers and realizes they can't be without you. - Act like you don't care and want your time off. Works for raises,too. Of course, if you have a good employer, none of that is necessary.