[3] He then served his mandatory military service with the Swiss Armed Forces in the function of infantryman.

He stopped with those activities when he entered Arbonia Forster Group (AFG), in which he was employed from 1985 to 1990 as general director.

Oehler was a member of the National Council (Switzerland) from 1971 until 1995 for the Christian Democratic People's Party (CVP).

He was a member of several commissions focussing on economy, finance and state and foreign policy.

[4] Since 1976, he is married to Marianne (née Metzler), and resides in Horgen, Balgach and Miami Beach, Florida.