Holding that an "inference of improper employer motivation" is permitted when an employer has terminated an employee who acted as a leader in making complaints to management on behalf of himself or others, or has organized workers on employment issues
Holding that where LPNs do not have the authority to issue written warnings without higher approval or to terminate or suspend nurses aides, the Board's determination that the LPNs do not actually discipline or effectively recommend discipline was supported by substantial evidence
Holding that Chevron deference does not "extend to an interpretation [of a statute] taken solely in connection with an agency's litigation position in a particular case or set of cases."