Like I said earlier, learn some facts before you shoot your big dumb mouth off.
"The rules governing withdrawal liability are found in the Multiemployer Pension Plan Amendments Act of 1980 which amended ERISA to impose withdrawal liability upon employers who cease contributions to a multiemployer defined benefit pension plan with unfunded vested benefits. Withdrawal liability is essentially an exit fee requiring employers to pay its share of a plan’s costs (future vested benefits) which have not been paid through previous contributions or investment returns. Withdrawal liability only applies to multiemployer defined benefit pension plans; it does not apply to health and welfare plans, annuity plans or other defined contribution plans."
http://www.agcmichigan.org/docs/member-service-docs/withdrawal_liability_rules.pdf