Around 200 workers at a western suburbs distribution centre run by transport giant Linfox have protested over an alleged culture of bullying.

The warehouse is operated by Linfox for Coles, and it is the second time this week that staff at the centre have protested.

Walkout: Staff protest at the Linfox plant in Truganina. Credit:Jason South

Among the crowd of workers who gathered during a break time for the protest on Wednesday were several who complained of being bullied and harassed by warehouse managers.

But a Linfox spokesman said the company did not tolerate bullying, and had strict processes in place to deal with complaints over workplace issues.