Due to the emergency, the company recalled all employees on leave to return to work immediately.

recalled 是动词 recall 的过去式。recall 由前缀 re-（表示"重新"）和 call（"呼叫"）组成，字面意思是"重新叫回来"，引申为"召回、要求返回"的意思。在句中表示公司紧急召回休假员工。