Shiftgig, an on-demand labor marketplace, raised another $3.9 million in equity, ChicagoInno reports. The new funding follows a $22 million Series B funding round in November 2015. Shiftgig has raised about $40 million since launching in 2012, according to ChicagoInno. Earlier this month, Shiftgig acquired BookedOut Inc., a logistics technology platform focused in the experiential marketing vertical.