happen on

British  

verb

1. (intr, preposition) to find by chance

   I happened upon a five-pound note lying in the street

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Example Sentences

“It may happen on a case-by-case basis because an officer in and of himself has humanity,” he said.

From Salon

"For this to happen on something which is just there to save lives is quite telling and shocking. It's time that people wake up and realise that you can allow hatred only so long, but eventually it catches up," she told the BBC.

From BBC

Say what I caused to happen on that awful night.

From Literature

But they typically happen on a much smaller scale, making Eaton’s potential face-off with the administration unusual.

From The Wall Street Journal

But it’s not going to happen on her accounting clerk salary at Purina, let alone Floyd’s meager earnings.

From Los Angeles Times