Research on informal learning in the workplace suggests several definitions, including that informal learning is a process of learning that takes place in everyday experience, often at subconscious levels, and that it is unique to, and rests in the hands of, the learner. Research supports introducing informal learning not as a replacement for formal activities but as a complement to them. A 2-year study of U.S. corporate cultures identified a "teaching firm" as one that "creates an environment in which teaching and learning are institutionally and culturally embedded in the organization." One of the most noteworthy findings of the study is support for estimates from previous studies that 70 percent of what people know about their jobs, they learn informally from the people with whom they work. Strategies for facilitating informal learning in the workplace include career development and planning and information exchanges such as meetings and study groups, as well as the use of workplace technology. (KC)