No person, or officer or agent thereof, involved in a strike or lockout
shall knowingly employ, in place of an employee involved in a strike
or lockout, any person who customarily and repeatedly offers himself
for employment in the place of an employee involved in a strike or
lockout.
No person who customarily and repeatedly offers himself for employment
in place of employees involved in a strike or lockout shall take or
offer to take the place of an employee involved in a strike or lockout.
No employer shall engage an employee who, to said employer's
knowledge, is unaware of the existence of a strike or lockout in a
plant currently involved in a strike or lockout, nor shall any employment
agency refer persons for employment to a plant currently involved
in a strike or lockout without adequate notice to such persons that
there is a strike or lockout at the plant at which employment is offered.