Italy's new government has lifted the coronavirus vaccination requirement for health workers in hospitals and nursing homes.

As of Tuesday, about 4000 health workers who have not been vaccinated against the coronavirus will be able to work again, Prime Minister Giorgia Meloni said in Rome on Monday evening.

The measure of the previous government led by Mario Draghi would have been valid until the end of the year.

Health staff must continue to wear masks.

The government also tightened penalties to crack down on illegal rave parties.

Those who organise such parties and occupy buildings or land without permission can go to prison for up to six years instead of the previous two.

Organising gatherings of more than 50 people that pose a threat to public order, integrity or health can result in fines of between 1000 euros and 10,000 euros ($A1550-15,470).

At the weekend, a techno party in Modena, northern Italy, with several thousand participants made headlines.

The police cleared the party, which lasted several days, on Monday.

The Halloween party, which at times hosted more than 3500 guests at once, was supposed to last until Tuesday, according to the organisers.

Media reports said the police made the partygoers break off the event and took the personal details from hundreds of guests.

The illegal rave had caused disapproval among the new government in Rome over the weekend, which led Interior Minister Matteo Piantedosi to order police to intervene.

"I am very pleased with the clear signal that has been sent here," Meloni said.

The leader of the populist League party and current transport minister, Matteo Salvini, also welcomed the eviction action, tweeting on Monday: "The fun is over."

These were the first decisions that the ministers of the Meloni's new government took.

Further decisions were also made regarding the judiciary.

In contrast to previous rules, prisoners with life sentences can now be granted lesser sentences even if they do not co-operate with the judiciary.

In return, however, they are no longer allowed to have any connections to organised crime.

This decision complied with a recommendation by the Constitutional Court.

The government also postponed the entry into force of a judicial reform made by the previous government's cabinet which involved European Union funds for recovery after the pandemic.

Italy must bring the reform into force by the end of the year in order to meet the deadlines for accessing the funds.