Well, Ziggy, it can happen in some instances. My former government employer had a pretty nice DB plan.
They kept the DB plan in place for all the current employees, but here's the 457b deal they recently announced for the newbies:
Retirement - XXX offers full-time employees a contributory retirement program, wherein employees can contribute through payroll deduction up to the maximum limit permitted by the IRS (currently $15,500/year). XXX will automatically contribute 2% of an employee’s salary (including overtime) to the employee’s retirement account. If an employee chooses to contribute, XXX will match dollar for dollar of the first 4% of that an employee contributes, making XXX’s contribution a total of 6%. There is a pro-rated vesting schedule, and employees are fully vested after five years of service.
Pretty similar to the typical Megacorp plan, yes?