is it common for teamsters with higher seniority to side with management, work with them to make their jobs easier, and not file grievances when the contract is broken? i've only been at my hub for a little over a year and it's clear that higher seniority teamsters let the management break the contract(mainly PT sups working while not training) while the management lets them slack. the main problem is the shop steward, who wouldn't say a word when management harassed and threatened me in front of him. i heard from a driver today that he does this because the management is manipulating him into thinking that he's doing what's right, while making his job as easy as possible, just so that he wont file any grievances and so that he'll always side with them over any union worker. is this normally how the whole union thing works? thanks.