Workers in this minor group perform manual tasks having a simple and routine nature and requiring mainly physical effort, which are not performed by workers classified elsewhere. Workers performing simple manual tasks in farming and mining are classified in minor group 6-2 and 7-1 respectively; caretakers and cleaners of residences and commercial and other establishments in minor group 5-5; hotel baggage porters in 5-99.90; Dockers and freight handlers in unit group 9-71.