GLB, which stands for guaranteed living benefits or living benefits, is an optional guarantee that can be embedded into variable annuity products. In the past, variable annuities could come with a guaranteed minimum death benefit (GMDB) which paid a minimum benefit upon death of the annuitant. Over the past decade, however, product development and innovation have flourished, and insurers offer income, accumulation, or withdrawal guarantees that can provide a significant measure of protection against market risk while the annuitant is alive. Some of these “living benefits” include: guaranteed minimum income benefit (GMIB); guaranteed minimum withdrawal benefit (GMWB); guaranteed lifetime withdrawal benefit (GLWB), and; guaranteed minimum accumulation benefit (GMAB). Guaranteed living benefits have proven to be incredibly popular. More than 95% of variable annuity sales in 2007 contained some form of living benefit. Guaranteed lifetime withdrawal benefits (GLWB) have proven to be one of the most popular guarantees.