In the negotiations to form a "Grand Coalition" of the Christian Democrats (CDU together with the Bavarian CSU) and the SPD following the 2013 federal elections, Laumann was part of the CDU delegation in the working group on health policy, led by Jens Spahn and Karl Lauterbach. He was subsequently appointed State Secretary in the Federal Ministry of Health under the leadership of minister Hermann Gröhe in the third government of Chancellor Angela Merkel. In this capacity, he also served as the Federal Government's Commissioner for Patients' Affairs.