Asian-Counsel, Vol. 7, Oct. 2009 at 19, mentions an “Asia-Pacific Head of Legal & Compliance for a European asset manager” whose company conducted an “employee staff engagement survey” to identify the kinds of issues that were of concern to employees.
Only if you have a very large and dispersed legal team does a survey make sense. Or, as in the cited example, if you can ride on the coat tails of a broader, company-wide survey. Far better to listen to people around you, ask questions, and keep your eyes open (See my post of July 13, 2008: employee morale with 15 references.). You could also try a focus group to gather feedback quickly and with nuance.