A group of employees at Statistics New Zealand have launched industrial action.
PSA members are taking action over a proposed new pay system.
Union secretary Richard Wagstaff says Statistics New Zealand is trying to force staff to adopt the system.
He says staff believe the new system is confusing, lacks transparency, undermines redundancy and long service leave for some groups of workers and has been structured in such a way that some staff will benefit greatly while others won’t benefit at all.
Mr Wagstaff says the low level action includes an overtime ban and a work to rule, while field interviewers are withholding or delaying the results of some survey information.