Husband wants to quit his job

My husband is talking about quitting his job after the new year. He's a counselor and works at a place for it. He mainly does group therapy and also goes to the schools. His group therapy he's assigned to is LGBTQ and LGBTQ youth. He sees his actual clients at the middle. Back in October they cut their LGBTQ group therapy all together so my husband was forced to be moved to the battering class. It's for men(or women) who abused their wife(or husband, or just partner). He hates it. My husband knows there is some therapies he can't do personally. Like marriage counseling because he's a side taker. And also for people who abuse. Not to mention this battering class mainly consist of court ordered people. So it isn't people who feel bad and are seeking help. It's mainly people forced to go and he said he's pissed they cancelled a group that's really needed (especially in our state... Oklahoma...) for him to be forced to help a bunch a narcissistic who make excuses for their behavior at every meeting. He was mainly staying because he had clients at the school but he found out starting next year the contract with the school is being cut. Meaning he won't be there to see his clients anymore. So his job is saying he can either go part time and just do the battering class or he can do desk work some days. My husband is talking about quitting. Problem is it's a very high paying job. I'm worried he won't be able to find as much making what he's making. He's okay with cutting some luxuries if it gets him out of this job but I'm not.... Maybe that's selfish but I feel he shouldn't quit without my OK.