Pros
Intelligent, hard-working colleagues and excellent benefits. Many people care about quality and working in partnership with authors and customers, but the institutional emphases have shifted markedly to short-term profitability-- often at the expense of long-standing author/publisher relationships. This situation is an industry trend and not a Pearson-specific issue, per se.
Cons
Regular, very poorly planned and executed reorganizations-- some seemingly driven by individual managers' desires to "manage up" with little thought to repercussions and long-term feasibility. So many built-in inefficiencies due to poorly thought through, top-down shifts where all key players are not brought to the table. While the latest top-down reorg (ongoing through 2013) trimmed a lot of top-line dead wood and sycophantic non-performers, the current CEO is giving short-shrift to North American higher ed in favor of the opportunities to build for-profit schools (using Pearson materials) in the developing world. Fewer people are working harder and harder with poor recognition, generally.