Many employers offer employee benefit plans which include life insurance and health and/or dental benefits, and may include short and/or long term disability insurance and critical illness insurance. The employer usually pays between 50% and 100% of the cost of the plan.
I usually recommend that the employer pay 100% of any health and dental premiums as this is most tax effective. I also recommend that the employees pay for the life, disability and critical illness portion of the plan so that they will not pay taxes if they make a claim.