Employer-sponsored life insurance is a great benefit, but it's usually not enough coverage to protect most families. Most employer-sponsored policies offer coverage that is one to two times your annual salary. So if you make $50,000 per year, your employer may offer $100,000 in life insurance coverage at very little cost to you. While this is helpful, the amount you really need is the total amount your family needs to replace your income for years to come. Many financial experts recommend that you have coverage that is actually 10 to 12 times more than your annual salary. Or enough to replace your income for X years and help pay for expenses or services you used to provide, like living expenses, child care, college expenses, bills, and mortgage payments.
The other disadvantage is that most policies through work only last as long as you are employed there. Many people tend to lose their insurance coverage when they change jobs, are laid off, or when they retire. Which could mean losing your insurance when you need it most.