En typologisk undersökning av Luthers, Thurneysens och Buchmans biktuppfattningar (Confession and Relief.

A Typological Examination of Lutheran, Thurneysen and Buchman's Concept of Conflict).

[2] During his time as Archbishop he supported ecumenical efforts[3] and in international affairs favored sanctions against Apartheid South Africa.

Werkström was active in the creation of the Porvoo Communion, which is a recognition and an agreement of unity between Lutheran churches in the Nordic and Baltic countries and Anglican churches on the British Isles.

In 1991, he visited Rome to commemorate the 600th anniversary of the canonization of Bridget of Sweden together with the Roman Catholic pope.