It shall be unlawful for any employer: 1) to require any employee, as a condition of employment, or of continuance of employment, to be or become or remain a member of affiliate of any labor organization or agency;
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(2) to require any employee, as a condition of employment, or of continuance of employment, to abstain or refrain from membership in any labor organization; or (3) to require any employee, as a condition of employment, or of continuance of employment, to pay any fees, dues, assessments or other charges or sums of money whatsoever to any person or organization.