[citation needed] After graduating in 1976, Paroubek worked as a manager for several state companies including 'Restaurants and Canteens' (Czech: Restaurace a jídelny).

[3] He met agents three times in meetings where he allegedly expressed loyalty to the communist government and disagreement with opposition groups such as Charter 77.

[6][7] Following the Velvet Revolution in November 1989, Paroubek joined the re-established Social Democratic Party (ČSSD), and was given an executive post by chairman Jiří Horák.

After a government crisis in early 2005 related to Gross's personal financial affairs, Paroubek succeeded him to become the 6th Prime Minister of the Czech Republic on 25 April 2005.

On 30 July 2005, the CzechTek free techno party was broken up by around 1,000 riot police using tear gas and water cannons, claiming the event participants had damaged private property.

Paroubek had spoken in favour of the action beforehand and subsequently defended it, stating that the participants were "not dancing children but dangerous people", but was criticised for the raid by President Václav Klaus.

In May 2006, a report by Jan Kubice, head of the Czech Police's organized crime unit, was released.

Paroubek responded by accusing the opposition ODS of conspiracy and "putschist" tactics, and vowed to punish those responsible if elected.

(...) I feel a duty to announce that democracy in this country incurred a hard intervention comparable maybe only with February 1948.

[13] Although opinion polling put support for ČSSD at around 10% when Stanislav Gross resigned as Prime Minister,[14] the party eventually received 32.3% in the elections and finished runner-up to ODS.

Shortly after the end of the event there was an altercation between two of the guests, businessman Bohumír Ďuričko and Václav Kočka jr., the son of a carousel operator.