Eligibility for Retiree Health and Life Insurance Benefits Rule of 70: the employee's age plus years of continuous, full-time service equal 70 or more, and the employee is at least age 55, with at least ten years of continuous, full-time service.
Extension of Benefits Under Rule of 70 To be eligible to retire, you must be at least age 55 with 10 years of service or age 65. Years of service for the “Rule of 70” eligibility purposes, means total years of employment from date of hire to date of termination.
It makes no difference how long you've been with a company so yes, it's legal to lay off any and everyone without severance. The exceptions: a union agreement requiring severance, a personal contract calling for a severance. This is usually only for executives and ``key'' people.