The mounting number of lawsuits filed against US insurers and brokers has led to another turbulent week.

Marsh & McLennan (MMC) is facing several more investigations than was originally thought.

The mounting number of lawsuits filed against US insurers and brokers has led to another turbulent week.

Marsh & McLennan (MMC) is facing several more investigations than was originally thought.

In the group's filings with the Securities and Exchange Commission the company said the US Department of Labor has targeted the company over its employee benefit plans.

Willis has also been unable to escape the line of fire. The Michigan attorney general launched a scathing attack on the company complaining to that it had failed to hand over documents relating to its contingent commission practice. Willis said it would fight it in court if there was no agreement.