BOSTON (AP) -- Activists pushing for an increase in Massachusetts' minimum wage are planning to rally at the Statehouse.

The union-backed group says it wants lawmakers to support a ballot question that would raise the minimum wage to $10.50 an hour over two years and automatically link future hikes to increases in inflation.

Activists at Wednesday's rally will also press lawmakers to increase the minimum wage for tipped workers to 60 percent of the regular minimum wage.

The Massachusetts Senate has already passed a bill that would increase the hourly minimum wage to $11 over three years and also index future increases to inflation.

House Speaker Robert DeLeo supports increasing the wage to $10.50 per hour over three years, but without the automatic inflation adjustments.

The last minimum wage hike in Massachusetts was in 2008.