Sheesh; why the downvotes? It's a very appropriate comment as the 'Protestant work ethic' is the canonical name for, and most likely significant source of, the exact feeling the GP described.

There are plenty of Protestants in Europe (obviously) and many of them are more conservative than the US as regards work & society - eg it's typical in small towns not to find any shops open on Sunday in the Netherlands or Germany, and IIRC Germany had pretty stringent laws against Sunday working until quite recently. Some of this is related to trade union history, but on the other hand if you're a registered member of a church your tithes (religious tax for the upkeep of the church) will be automatically subtracted from your paycheck by law.

'Protestant work ethic' is something I've only heard talked about in America, usually couched in the form of an indirect put-down of non-protestants. Northern Europeans are more likely to view predominantly Catholic countries like France, Spain, Italy as stereotypically lazy, but this is usually ascribed to the Mediterranean climate.

My father was raised Protestant, I went to a Protestant elementary school and was raised half secular, half Protestant and I generally recognize it very much in myself, my father and quite a few people in our surroundings (mixed religion area.)

The thing is that it's not necessarily so much about working hours here. It's the general feeling that every moment should be intentful, purposeful and, like our churches, generally without frills.

In a way it feels less like 'work hard' and more like 'don't endulge yourself' to me.

I feel "Puritan work ethic" would be more appropriate for Americans.