(CNN) For a sixth straight night, thousands of people in Budapest took to the streets to protest Prime Minister Viktor Orban and his Fidesz party.

Several thousand people demonstrated outside the headquarters of Hungary's state-run TV MTVA, chanting anti-government slogans and shouting "We've had enough," pictures from the scene showed Monday.

Protesters have been angry about what they call a "slave law," new legislation allowing employers to ask workers to take on up to 400 hours of overtime a year.

Demonstrators stand outside Hungary's Parliament on Sunday in Budapest.

The demonstrations began last Wednesday , after Hungary's Parliament passed legislation pushed through by Fidesz.

The government told CNN the "voluntary changes to working hours" were "in the interest of the workers" and would allow people to work and earn more.

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