By Christian Blauvelt
Updated October 21, 2010 at 06:22 PM EDT

Concert promoter Live Nation announced on Wednesday that two of the pop superstar’s Monster Ball concerts in Paris, previously scheduled for Friday, October 22 and Saturday, October 23, have been postponed due to “logistical difficulties” resulting from France’s nationwide strikes over a proposed pension reform bill. The bill would raise the retirement age in France from 60 to 62, prompting protests from student groups concerned the measure could limit job opportunities for young graduates. Strikers have attempted to disrupt the distribution of gas within France for more than a week, resulting in 5,000 of the nation’s 12,300 gas stations running partially or completely out of fuel, according to the French Ministry of Ecology and Energy. As such, Live Nation has said “there is no certainty that the trucks can make it to the Bercy for this weekend’s shows.” The concerts have been rescheduled for December 19 and 20.