He has worked in the field of energy policy and related areas for four decades.

After the war he worked for several decades as a teacher in grade school.

Here, we have worked for decades to set up this freedom of movement.

The elderly, after working for decades, want their government to help them.

This second mine was old and had been worked for decades.

Murray has worked with her for more than two decades.

She has worked as a journalist in Chicago for two decades.

But movie theaters have worked for decades on "a different business model."

He has worked for decades as a partner with the committee's senior Republicans.

Working for decades meant that she suffers from many medical problems.