Union of Belgian Stoneworkers
The Union of Belgian Stoneworkers (; , COPB) was a trade union representing quarry workers in Belgium.

The union was founded in 1889 as the National Association of Stone and Plaster Workers. It included quarry workers, stonemasons, and paviours, although the quarry workers were always the strongest section, and the stonemasons later left to join the construction workers' union. From 1893, the union published "Le Carrier", but until 1906 it achieved little.

The union undertook a lengthy strike in Ecaussinnes in 1908, and this experience led it to restructure. It became the more centralised "Union of Belgian Stoneworkers" on 1 January 1909, and by the end of the year, it had 6,435 members. It was initially known for its high membership fees, but it reduced these, and by 1913, it had 13,920 members, more than 30% of the total workforce.

After World War I, employment in the industry declined, as mechanisation increased, but initially the union's membership continued to grow, reaching a peak of 25,752 in 1921. The following year, it secured an agreement for an eight-hour working day in the industry.

The union's leader, Hubert Lapaille, was a leading figure in the Belgian Resistance during World War II. After the war, the union was a founding constituent of the General Federation of Belgian Labour, but it emerged from the war much weakened, with fewer members than its communist rival.

Membership did not increase, and by 1964 it had only 6,443 members. On the 1 January 1965, the union merged into the General Union.
Q178790
trade union
Concept
Q31
Belgium
LOC
Q273316
Ecaussinnes
LOC
Q361
World War I
EVE
Q1987815
Belgian Resistance
ORG
Q362
World War II
EVE
Q2675373
General Federation of Belgian Labour
ORG
Q2428691
General Union
ORG
Q48183296
Union of Belgian Stoneworkers
Concept
Q48183296
Union of Belgian Stoneworkers
Concept
1889-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1889
DATE
1893-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1893
DATE
1906-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1906
DATE
1908-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1908
DATE
1909-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1 January 1909
DATE
1913-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1913
DATE
1921-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1921
DATE
1964-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1964
DATE
1965-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1 January 1965
DATE
+30^^http://www.w3.org/2001/XMLSchema#decimal
30
NUMBER
country