SDF Girl, The rule my W and I have is that neither one of us quit a job without having another one lined-up. We don't put the other person in a difficult financial situation. The exception is if the job is so toxic that it's affecting one's health.
Is your H job hunting? If not what's keeping him stuck?
I know it's hard to be supportive of a spouse with job dissatisfaction, when financial issues are intertwined. It's also hard to be supportive when the other party fails to be proactive about solving their problem.
I think all you can do is to be a good listener around these issues for your H, set an expectation that he has a responsibility to the family finances, and provide whatever help you can in helping him find a different job.
Until he's ready to commit to looking for something different, than his procrastination and avoidance are his issues, and all we can do is be a good listener, and help him sort things out, and muster the courage to make a change.
I would not give him permission to quit, unless his health is in jeapordy.
CL
CL 53 W 54 M 20 yrs. 03'-09' Separation + Old Patterns + GAL 10-14' Piecing
"The Master allows things to happen. She shapes events as they come."