Nesting inputs inside of the label is accepted practice. The w3c wiki site even provides an example. w3.org: The label element may contain at most one descenda

Nesting inputs inside of the label is accepted practice. The w3c wiki site even provides an example. w3.org: The label element may contain at most one descendant input element, button element, select element, or textarea element. You just have to be a bit careful with it concerning screen readers. EDIT: besides, there are CSS reasons for wrapping the input with a label.