use vn;
DROP TEMPORARY TABLE IF EXISTS tWorkerLabour ;
CREATE TEMPORARY TABLE tWorkerLabour    
SELECT l.workerFk, l.businessFk 
FROM vn.workerLabour l
WHERE util.CURDATE() BETWEEN l.started AND IFNULL(l.ended, util.CURDATE());

UPDATE vn.worker w 
	JOIN tWorkerLabour l ON l.workerFk = w.id 
	SET w.businessFk = l.businessFk;

DROP TEMPORARY TABLE tWorkerLabour;