20 states require teachers to work 7-10 years before their pension vests — so the 33% of new teachers who quit within 5 years walk away with zero employer retirement contributions

Teacher pension systems in 20 states require 7 to 10 years of service before a teacher's benefits vest, meaning the employer's contributions become the teacher's property. The average vesting period across all states is 6.4 years, and it has been increasing — more than a dozen states have lengthened their vesting periods in the past decade. If a teacher leaves before vesting, they receive only their own contributions back (plus minimal interest), forfeiting the employer match entirely. Given that one-third of new teachers leave the profession within five years, this means a massive number of teachers are working for years under a compensation structure that promises retirement benefits they will never receive. This is effectively a hidden pay cut. When a district advertises a $45,000 salary plus pension benefits, the pension component is worth 15-20% of salary in employer contributions. But if the teacher leaves in year four (as one-third do), those employer contributions revert to the pension fund — effectively subsidizing the retirements of teachers who stayed 30 years. The teacher who left gets nothing but their own money back, sometimes without even keeping pace with inflation. They spent four years earning 27% less than comparable professionals in exchange for 'retirement benefits' that evaporated when they left. The structural reason this persists is that pension systems are designed for a workforce model that no longer exists: the career-lifer who starts teaching at 22 and retires at 55. That model made pension math work because long-tenured employees earned their benefits over decades. But modern teachers change careers more frequently. Pension funds benefit from non-vested departures because forfeited employer contributions reduce the fund's long-term liability. There is a perverse financial incentive for pension systems to maintain long vesting periods even though it punishes the exact population (early-career teachers) that the profession most needs to retain. Switching to portable 401(k)-style plans would solve this, but teachers' unions often oppose the change because it would reduce guaranteed benefits for career teachers who are the union's core constituency.