[There's a slight questioning tilt of his head at the apparent downturn in her mood—disappointment at his gentle refusal? Displeasure at her judgment being wrong? He has no real way of telling unless and until she explains.

Not that it's important, ultimately; she's giving him the information he asked for. His apparent concern fades for the moment, replaced with a brief laugh and what's meant to be reassuring confidence.]

I'm not going to be wearing a suit while hammering boards or laying bricks, but I promise I'm not afraid of the work. [And ok, he's gotta say it—] Though I do wonder if you were wearing the appropriate footwear when you helped them...?

[do NOT work in construction without protective gear don't do it]