No,it isn't necessary or wise to call the police because your co-worker is sweeping dust on you and swearing at you. This is a problem for the boss to handle and if he chooses not to, you may want to find a different job, or ask to be assigned to a different shift, or tough it out until one of you is no longer working there. The law simply does not provide a meaningful remedy for every problem in life and this is one that will need to be solved somewhere other than a courtroom.
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