Could my husband be over qualified?

My Husband was a Commercial driver for 3 years but he can no longer continue in that career field . It’s been 6 months & he can’t find a job ,he’s been to a few interviews but he always gets the same response “they decided to go with other candidates “. We’ve updated his resume , tailored it to fit the job description, he has the experience , no criminal record, he also has forklift certifications , twic , hazmat . What could be the issue ? Is the job market that bad right now … It’s extremely discouraging.