Mona started working in the fire and rescue services in 1997, by participating in a government project that was carried out by the Stockholm Fire Brigade. The project lasted for ten months and was investigating why there were no female full time professional firefighters. In 1998, Mona was hired as a firefighter by Södertörn's Fire Brigade and worked in that capacity for twenty years.
As an elected union representative, Mona started working in 2007 with issues that concern women at the workplace, such as attitudes towards women, pregnancy, firefighting equipment and protective clothing. During this time, she began forming a nationwide network for women in fire and rescue services. The network, called Women in Fire and Rescue Services, was officially started in 2011. Mona was elected chair that first year and is still chair today.
In 2013, Mona represented Sweden in the CTIF Working Group Women in Fire Services and was elected in 2015 as vice chair of the Commission for Women in Fire and Rescue Services.