How can you help employees feel more comfortable approaching one another when they're unhappy about something?

Every other month Pat Bruner, president of the two-site T.L.C. Child Care Centers Inc., takes her 22 employees out for a pizza. The first hour is open season for criticism about anything and anybody, including management. Protests range from "You borrowed my supplies without returning them" to "You get too tense when things get crazy." The second hour is devoted to positive comments and finding solutions to issues raised. Out in Green Bay, Wis., the cost of these formal gripe sessions is a measly $35 to $50.