MUSKEGON, Mich. — Plumbers and pipefitters with UA Local 174 are on strike at Muskegon’s Shaw Walker building .

Union representatives say they are striking with seven workers from the Grand Rapids–based Moore Mechanical because the company has not recognized their workers’ efforts to unionize.

The action follows an informational picket held in late October. Union representatives say the demonstration has now escalated into a strike at the Shaw Walker redevelopment project.

“This is a recognitional strike and an unfair labor practice strike,” said Johnny Ortiz, an organizer with Local 174. “Those workers are standing together and saying, ‘We want a contract,’ which is their right under national labor laws. Moore Mechanical told them no.”

Ortiz said the strike comes amid delays in the

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