The NDP-Green tax changes, if fully implemented, will increase the tax burden for the average British Columbian family by $594.
Some workers may be uncomfortable publicly voting for or against unionization.
Major projects in the province include the Kinder Morgan pipeline and the Site C dam.
Both the NDP and Greens oppose the Kinder Morgan Trans Mountain pipeline expansion.
The B.C. NDP wants to raise the province’s carbon tax to $50 per tonne.