SEO for Recruiting/Job industry

Hello. Have a potential client, that`s in the Recruiting/Job industry. Has anyone SEO`d specifically for this industry and if so, did you have any insight on what did and didn`t work? The client is a small boutique firm located in Chicago but posts a small amount of jobs openings from 5 other states. My thinking is the only way to succeed here is to really target the local market. There are sites appearing on page 1 for "Chicago Jobs", just as a quick example, and I know we can do SEO better than they do...based on what audit details I could derive. Potential Client’s Situation: -Overall Content: Lacking but can/will address w/ client -Blog: In place. Client "employs" a blog writer, but that is still a work in progress due to lack of industry knowledge and SEO writing skills -Job Postings: Present, and honestly, this is the area I struggle thinking through the SEO. Is it worth it, if jobs get filled in say...less than a month? Thank you!