DH has been offered a fantastic new job. Problem is, his previous employer is incredibly childish and vindictive, and is now refusing to give a reference. He wont get the job if he doesn't have references from management for the last 10 years of employment.
He hinted at doing this to another employee who quit so its no surprise really. In fact DH warned the people doing the reference check he might be difficult, but they contacted him anyway.
From what I can tell, there is nothing he can do, but I'm wondering if anyone has any experience of this.