THE Ministry of Labour and Social Security has signed a memorandum of understanding (MOU) with the Jamaica Household Workers' Union (JHWU) that will promote the services of the ministry's labour market information system (LMIS) among the union members.The MOU was signed on Wednesday by Labour Minister Karl Samuda; permanent secretary in the ministry, Colette Roberts-Risden; and executive member of the JHWU, Maureen Smith.