The Democratic Unionist Party (DUP) has said there will be no further meetings of the Northern Ireland Executive unless in "exceptional circumstances".
First Minister and DUP leader Peter Robinson made the announcement as the NI assembly returned on Monday.
In response, Sinn Féin MLA Conor Murphy said if the DUP chose to resign, there was "nothing we can do about that".
"We're not going to allow ourselves to become distracted by the electoral contest that's going on within unionism," he said.
"We are mandated to be here to do business.
"It's up to others to explain what effect their actions will have on our ability to deliver collectively for communities."