They offer very good benefits to fit whatever works for you best.
40K program was managed by the cheapest firm the company could find. CQ removed their HSA offering in 2017. Pay on average is well below the national average.
ConQuip just created new benefit packages that are still 90% paid by the employer and less costs to the employee. There's not very many companies that will pay 90% of the premiums for their employees.
List based on reports from current and former employees. It may not be complete.