Method of manufacturing electric contact

A method of manufacturing an electric contact, the method comprising:

• a welding step of welding a portion of a contact material to a base material at each of a plurality of welding positions on the base material;
• a crushing step of crushing, to a circular shape, the welded portion of the contact material at each of the plurality of welding positions on the base material;
• and
• a concave-portion-formation step of forming, at each of the plurality of welding positions on the base material prior to the welding step, a concave portion that accepts part of the welded portion of the contact material,
• wherein one or more absorption holes, each of which absorbs deformation of the base material in a thickness direction caused by the crushing of the portion of the contact material at a welding position in the plurality of welding positions on the base material, are formed prior to the formation of the concave portions, each absorption hole being formed with a distance from a welding position in the plurality of welding positions on the base material, each absorption hole being a slotted hole having an open portion with a length greater in longitudinal directions than a diameter of the crushed portion of the contact material, each absorption hole facing the contact material in a lateral direction of the open portion, a total volume of the one or more absorption holes formed with the distance from a given welding position being greater than or equal to a volume of the welded portion of the contact material that is press fit by the crushing step into the base material at the given welding position.