Mercer does more big HR outsourcing and outsourcing-led deals because that is the biggest part of the business and general management work goes to Mercer MC (now called Oliver Wyman). It is more structured and stable, but also hierarchical and slow.TP does more change-led and broader business-oriented work because it doesn't have the outsourcing side or constraints of a separate MC business carving off that work. It is less regimented, people are more friendly and relaxed, but it can also a bit political.With regards to restructuring, right now Mercer HR is feeling a bit abandoned by the rest of the MMC consulting businesses, plus recent lawsuits and financial difficulties are knocking morale.TP is mostly over the big change of recent years, which was the sale of TPAS to EDS. There have been some acquisitions, but of smaller companies and there hasn't been much overlap so people are fairly happy. An IPO has been on the table for a few years but nothing seems to be happening fast on that front so there is little stress arising.In the UK, TP pays better hands-down and has more generous pensions and benefits.