Vermont teachers now have the option to invest in a mutual fund that excludes fossil fuel companies.

The state Teacher’s Retirement Board of Trustees recently approved the addition of a fossil fuel-free mutual fund investment option for its 403(b) plan, Treasurer Beth Pearce said in a news release.

The board approved the addition of the Pax World Global Environmental Markets Fund (PGINX) at its August board meeting.

The 403(b) plan is managed by Great-West Retirement Services and is available to all Vermont supervisory unions, the release said.

In addition to the fossil fuel-free option, plan participants may also choose to invest in two other socially responsible investment funds — Calvert Equity Portfolio A and the Pimco Total Return III Institutional Fund, the release said.

Pearce said participants should be able to start investing in the fund by Dec. 1.