Utilize the input text as a context reference, choose the right relationship between Grocon and construction from the options. Options: product/material produced, manufacturer, distributed by, industry, position held, original broadcaster, owned by, founded by, distribution format, headquarters location, stock exchange, currency, parent organization, chief executive officer, director/manager, owner of, operator, member of, employer, chairperson, platform, subsidiary, legal form, publisher, developer, brand, business division, location of formation, creator.
Text: CFMEU to pay Grocon $3.5 million over blockade Australia's biggest construction union has agreed to pay more than $7 million as part of a massive settlement over its alleged "black ban" of concrete giant Boral in central Melbourne.
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