Ranchi, April 1 Members of various trade unions and Left parties observed a "black day" in Jharkhand's Ranchi against the four new labour codes on Wednesday.
They also staged a demonstration at Ranchi's Albert Ekka Chowk under the banner of a joint platform of central trade unions and independent federations.
Wearing black badges, the participants raised slogans against the central government and demanded the revocation of the four labour codes.
"The Centre has consolidated 29 labour laws into four comprehensive labour codes, which were implemented in November last year.
"We have been protesting against the four labour codes and staged a nationwide general strike on February 12. We are observing a 'black day' against the labour codes in Ranchi on Wednesday," Centre of Indian Trade Unions (CITU) district secretary Pratik Mishra said.
He said the unions would be pressing for eight-hour work, minimum wages, permanent jobs, and women's safety.
"We will not proceed with the labour codes until the government talks to the trade unions and includes their suggestions," Mishra said.