Perhaps the most readily available place to start your search for HR employment agencies, and one that will ultimately land you a position in human resources, is to go online. There are many, many websites that specialize in human resources, and some of these websites are gateways to HR employment agencies. Sign up with one of these sites (or more than one), fill in a profile, and find a variety of jobs in your area related to human resources.
Of course, there are also the old "tried-and-true" local HR employment agencies, usually working in tandem with temporary agencies. Temporary agencies can be a great way to find HR employment in this economy, because full-time jobs may be hard to come by at present; nonetheless, you could be working, earning a paycheck, and gaining experience that will "fill in the gaps" on your resume so that when you do go to interview for a full-time HR employment position, you could show that you've been working steadily. (It's also possible, in some cases, that a temporary position may ultimately turn into a full-time one.)
Utilizing temporary agencies for HR employment does a number of things. For one, of course, it gives you the experience necessary to land a full-time HR position. You're not likely to be able to land a full-time HR position if you haven't worked at all in HR for a significant period of time. Temporary employment agencies for HR also provide a great way for college students just graduated to gain entry-level employment in HR so that they ultimately gain the experience necessary to move into full-time HR employment.
You can also contact HR employment agencies for help in your job search. They may be able to help you with resume construction, interview tips, and more in order to help you find at least a part-time or temporary job in HR, if not a full-time one. That said, of course, you might also find full-time HR employment with some luck, although the current economy has made these jobs in very high demand indeed.
Networking is also very important when it comes to finding HR employment. While HR employment agencies certainly have lists of jobs -- full-time, temporary or part-time -- available for HR candidates, professional networking especially through social networking sites online can often find you HR employment that HR employment agencies may not yet know about and won't last. This is a great way to get in before the crowd, so to speak, so that you can investigate HR jobs, determine whether or not you are suitable for them, and if so, apply for them. Doing just this may let you apply, interview and even get a job before these types of listings ever "go public" at HR employment agencies.
This is not to say that employment agencies for HR can't help you find HR work; they certainly can. However, by the time listings get to HR employment agencies, they'll likely already have many candidates vying for them, which will lessen your chances of actually landing this type of position.
These days, fortunately, many HR employment agencies post listings online, so that they are fresh and updated on a very significant basis. Therefore, make sure you stay on top of HR employment agencies' job listings online, and again visit employment agencies for HR physically if you must to get help with your job search.
Finally, certain HR organizations may also use recruiters to find HR candidates suitable for jobs they want to fill. A good way to investigate this route for finding HR employment is by simply typing in keywords such as "HR recruiter" or something similar, into your favorite search engine. Then, see what you come up with. You may find HR employment agencies' listings that include those from a recruiter, or you may come upon an HR recruiter's website; you can get in contact with them directly. HR recruiters often have knowledge of job openings that won't be listed publicly as well.
A last point to make here is that although employment agencies for HR can certainly help you with your job search, you must undertake the initiative to actually be prepared, polished and professional, with an updated resume, updated references, and the ability to sit down and present a comprehensive picture of yourself for prospective employers during interviews. Take the initiative, and then let HR employment agencies and other resources help you find that perfect HR job.