在一個時間段內，與基準網站相關性較高的站點包括：
Union Jobs Clearinghouse is our central site for posting the open staffing and trades positions in organized labor that are now accepting applications.[國際網路] - www.unionjob*.com - -
The National Labor College is the nation's only accredited higher education institution devoted exclusively to educating union members, leaders and staff.[國際網路] - www.*lc.edu - -
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