In March 2010, Christie signed into law three state pension reform bills, which had passed with bipartisan support. The laws decreased pension benefits for future hires and required public employees to contribute 1.5 percent of their salaries toward their health care. The laws prompted a lawsuit by the police and firefighters' unions. In his campaign for governor, Christie opposed any change in pension benefits for firefighters and law enforcement officers, including "current officers, future officers or retirees". He described the pension agreement as "a sacred trust". Later that year, he called for further cuts, including the elimination of cost-of-living adjustments for all current and future retirees. In June 2011, Christie announced a deal with the Democratic leadership of the legislature on a reform of public employee pensions and benefits. The deal raised public employees' pension contributions, mandated the state to make annual payments into the system, increased public employee contributions toward health insurance premiums, and ended collective bargaining for health benefits. The reform is projected to save the state $120 billion over 30 years. In June 2013, Christie signed a $33 billion state budget that makes a record $1.7 billion payment to the state's pension fund and also increases school funding by almost $100 million. The budget resulted from negotiations between Christie and Democratic leaders in the state legislature and was the first that Christie has signed as passed, without vetoing any of its provisions. In May 2014, Christie cut the contributions to New Jersey public workers' pension funds for a 14-month period by nearly $2.5 billion to deal with a revenue shortfall in the state budget of $2.75 billion. The state will instead make a $1.3 billion payment during the period. Christie cited the state constitution's requirement to have a balanced budget for his decision to cut payments to pensions for state workers, and follows Christie's changes to the state's pension formula earlier in 2014 to save $900 million through the end of his term.

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Christie cut the contributions to New Jersey public workers' pension funds for a 14-month period by nearly $2.5 billion