In most mediations, you don't need a lawyer's direct participation. People who are mediating are less likely to need an advocate because they are trying to work together to solve their problem -- not trying to convince a judge or arbitrator of their point of view. Because mediation rules are few and straightforward, people can usually handle the process on their own without too much trouble. If your case involves substantial property or legal rights, however, you may want to consult with a lawyer before the mediation to discuss the legal consequences of possible settlement terms. You may also want to make getting a lawyer's approval a condition of any agreement you make in mediation.
If you're considering having a lawyer help you mediate, you should look for an attorney who truly supports the process. Unfortunately, many lawyers enjoy their role as advocates ("hired guns"), and find it difficult to change gears to focus on helping people work out a compromise solution.
The type of lawyer you choose also depends on whether you want the lawyer to counsel you throughout the mediation or you are only interested in an initial consultation. The lawyer's personality and attitude towards self-help law doesn't make much difference when it comes to legal advice, but it can mean a world of difference if you are mostly interested in having the lawyer coach you on a continuing basis.
If you do need a law coach, you should make it very clear from the first interview that you want to work with a lawyer who understands and supports mediation. This means a lawyer who accepts that mediation sometimes involves compromise and that what you settle for in mediation can be influenced by, but should not be determined only by, what the lawyer believes a judge or jury might give. For example, you might tell a potential lawyer that you want him or her to help you prepare for your mediation, but you don't expect him or her to come to the actual sessions. Also, you might also ask the lawyer to be available to review any written settlement agreement before you sign it.
In an age when many lawyers are underemployed, there is always the risk that a lawyer who wants your business will say that "of course" he or she supports mediation, when in fact the lawyer has a fairly negative attitude. To probe a little deeper, ask the following questions:
Has the lawyer ever worked with clients going through mediation? If so, what did the lawyer think of the process? Was it successful for the client? The way lawyers talk about their prior experiences in mediation often reveals whether they really support and respect the process or think it's a waste of time. For example, some lawyers who have handled a few mediated cases that did not settle may be negative about the result ("I told my client it wouldn't work, but he wouldn't listen"). Fortunately, many other lawyers come out of mediation with an understanding and respect for the process, regardless of whether a particular case settled.
Has the lawyer been trained in mediation? There are two types of "mediation training" that many lawyers take these days. One is training to be an actual mediator; the other is training in how to represent clients effectively in the course of a mediation. Both show an interest in mediation but, of the two, you should probably gravitate toward a lawyer who has taken the second type of training: It suggests a more serious professional desire to help clients through the mediation process. This is particularly true if the training to be a mediator was very limited and the lawyer didn't have to pay for it.
When you hire a lawyer to help you with a mediation, be sure you both understand clearly how fees will be computed. Don't expect any special price break because you are mediating. Most lawyers will charge you their normal hourly rate. The key is to define, in advance, when and how the lawyer will help you. For example, if the lawyer says it will take three hours to advise you on the legal aspects of your case in advance and another three hours to review and discuss any proposed written settlement, you'll know that your bill will be six times the lawyer's hourly fee, unless, of course, you call the lawyer during the mediation and ask for additional advice.
To learn more about mediation, including whether and how to work with an attorney, see Mediate, Don't Litigate: Strategies for Successful Mediation, by Peter Lovenheim and Lisa Guerin (Nolo).