I know exactly what I am talking about. Maybe there are differences between state, municipal, county workers, etc but where I work, the full-timers certainly don't pay 33% of any premium - they would all have heart-attacks if they did that! I work in a NJ public workplace where the full-time employees pay a tiny percentage based on their salaries (not premiums), and believe me, the benefits cover everything. The teachers in town have the same deal. These super-low-cost type of benefits definitely still exist in some NJ public sector workforces. I am in Essex county though, maybe that explains some of it. We are also working off the last year of a 4-year contract, so changes may be coming.
I basically just lost my job so the town could still continue to pay these astronomical benefits, so I'm sorry if I sound bitter. I wish my full-time coworkers WOULD pay $600 a month and understand how the rest of us live.
The OP wanted to know where the great medical benefits are, and I can assure you that my workplace still has them at very low cost to the employee.