The government says the teachers' contribution rate will increase by three percentage points and the disability pension provisions will be moved from the pension plan to the teachers' long-term disability insurance plan.
The president of the Nova Scotia Teachers Union says the changes will ensure the plan's long-term viability.
The contribution rate increase will be spread over three years, with a one percentage point increase beginning Aug. 1.
The province and the union are joint trustees of the pension plan, which has 31,262 members.
The $1.5 billion pension plan is 75 per cent funded, and is currently able to meet its obligations for payments to retirees.