A woman was told by the Ministry of Business, Innovation and Employment that she would not receive paid parental leave as she failed to chase up her lost application.
Melissa Louis McCarty was employed by Downer as a business support manager from August 2008, The Employment Relations Authority said.
Ms McCarty was pregnant, and was due to give birth in March 2013. At the end of February she and a supervisor signed an application for parental leave.
She made a copy of the application for her records and posted the original copy to Inland Revenue Department (IRD), the authority said.
She then went on paid maternity leave from April 8, 2013 and returned to work on September 2, 2013.