in subsection (b) or (c) may also be assessed against any director or officer of the employer who directed or committed the violation, or had actual or constructive knowledge of and the authority to prevent the violation and failed to prevent the violation. (e) Considerations In determining the amount of any civil penalty under subsection (b), (c), or (d), the Board shall consider— (1) the gravity of the actions of the employer resulting in the penalty, including the impact of such actions on the charging party or on other persons seeking to exercise rights guaranteed by this Act