do by

British  

verb

1. (intr, preposition) to treat in the manner specified

   employers do well by hard working employees

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do by Idioms  

1. Behave with respect to, treat, as in John was determined to do well by his children. This idiom was first recorded about 1175.

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Example Sentences

“This schedule is the result of a secretive process done by unknown people, without the benefit of public input,” Benjamin said in a statement.

From Salon

It's a job that is predominantly done by women.

From BBC

While the bot proved capable at monotonous tasks like sorting objects, the former engineers said they thought most factory jobs are better off being done by robots with shapes designed for the specific task.

From The Wall Street Journal

He then spent almost two years as Hull manager - with observers again thinking he was harshly done by at the end.

From BBC

“Tons of people I work with learned what not to do by the manager they had,” Wasserman says.

From MarketWatch