Addressing the news conference called at short notice on Wednesday, Sommaruga said family reasons made her take the decision after her husband suffered a stroke.
Sommaruga has been a member of the government since 2010 as justice minister and then as transport, energy, environment and communications minister from 2018.
She also served as Swiss president in 2015 and 2020.
Sommaruga, who’s 62, is the second cabinet minister to announce her resignation for the end of the year, following the finance minister, Ueli Maurer.
Parliament is due to elect successors for Sommaruga and Maurer on December 7.
As a Swiss Abroad, how do you feel about the emergence of more conservative family policies in some US states?
In recent years several US states have adopted more conservative policies on family issues, abortion and education. As a Swiss citizen living there, how do you view this development?
What factors should be taken into account when inheriting Swiss citizenship abroad?
Should there be a limit to the passing on of Swiss citizenship? Or is the current practice too strict and it should still be possible to register after the age of 25?
Over a quarter of Swiss Catholics consider leaving the church
This content was published on
In Switzerland 27% of Catholics have thought about leaving the church, according to a survey by the Sotomo research centre.
This content was published on
Following the Credit Suisse debacle, the Swiss Financial Market Supervisory Authority (FINMA) is adapting its organisation.
This content was published on
The Swiss Armed Forces are training their fighter jets in Bern to fly from a civilian base. The exercise at Bern Airport will last until Wednesday.
Plans materialise for new particle accelerator in Geneva
This content was published on
Preparations for a huge new particle accelerator in Geneva have reached a milestone. After several years of work, a feasibility study for the project has now been finalised.
This content was published on
The value of frozen Russian assets in Switzerland currently stands at CHF7.4 billion ($8.4 billion), the Swiss government announced on Tuesday.
This content was published on
The number of business start-ups in Switzerland accelerated in the first three months of the year, with entrepreneurs being particularly dynamic in Central Switzerland, Basel and Geneva.
Most Swiss authorities want to ban Nazi symbols in public
This content was published on
A majority of Swiss political parties, cantons and associations want to ban the use and distribution of Nazi symbols in public.
You can find an overview of ongoing debates with our journalists here . Please join us!
If you want to start a conversation about a topic raised in this article or want to report factual errors, email us at english@swissinfo.ch.