The painting: Office at Night

How does one interpret "Office at Night" (1940), by Edward Hopper? This painting can be considered on so many levels. Does it depict a power struggle, a political comedy or the build-up of a forbidden office romance? It seems that Hopper preferred to leave the narratives to the viewer's imagination.

Or, as Hopper put it, "If you could say it, there'd be no reason to paint." http://www.nytimes.com/2006/07/09/arts/design/09shat.html

In "Office at Night" a man in his 30's or 40's sitting at a heavy desk in a sparsely furnished office room. A voluptuous secretary stands with her hand in a file drawer nearby. Is she twisted in a strained provocative way— both breasts and buttocks are visible.
Is she is looking at the man, or wondering how pick up the dropped paper on the floor in as much of a ladylike way possible?

A breeze enters an open window and rustles a blind as the man reads a document, apparently oblivious to the situation. Or is he?

In a letter to the Walker Art Center, which owns the painting, Hopper said the work was "probably first suggested by many rides on the 'L' train in New York City after dark glimpses of office interiors that were so fleeting as to leave fresh and vivid impressions on my mind."
http://www.nytimes.com/2006/07/09/arts/design/09shat.html

Hopper leaves those impressions blurred and layered. Is the relationship between the man and the woman emotional? Sexual? Or have they simply become inured to each other after working together for so long?

At the time, the position of executive secretary was a relatively prestigious role for a woman, though still submissive. Still, this woman looks fashionable, her makeup and her come-hither pose, could be the one with the power.