A drop in sales forced a bike business owned by MP Darleen Tana's husband into liquidation

E Cycles NZ has been accused of alleged migrant exploitation - and Tana has left the Green Party .

An inquiry found Tana likely knew about the allegations - and the Greens are calling for her full resignation from Parliament.

Insolvency firm Khov Jones says they are assessing the company's financial position and its stores aren't currently trading.

A spokesperson says decisions have not been made on continuing to employ staff - but there has been interest in the Waiheke store.