An 'out-worker' is expressly excluded from the definition of 'workman' under which one of the following legislations?
1
The Factories Act, 1948
2
The Plantations Labour Act, 1951
3
The Contract Labour (Regulation and Abolition) Act, 1970
4
The Inter-State Migrant Workmen (Regulation of Employment and Conditions of Service) Act, 1979