There is nothing inherently wrong with being in a management position, we need leftists in leadership positions. Be the person you'd want to have as a manager, support your team, and don't sacrifice your convictions. I'm sure they'd much rather have you in charge than some ladder-climbing petty tyrant.

Any time I've moved upwards in my career, it's because I was already doing the job and not getting paid for it. Usually that entails leaving for somewhere else, but you might as well take an internal opportunity if it suits your needs.

Managers and Supervisors

(1) Demand written orders.

(2) Misunderstand orders. Ask endless questions or engage in long correspondence about such orders. Quibble over them when you can.

(3) Do everything possible to delay the delivery of orders. Even though parts of an order may be ready beforehand, don't deliver it until it is completely ready.

(4) Don't order new working' materials until your current stocks have been virtually exhausted, so that the slightest delay in filling your order will mean a shutdown.

(5) Order high-quality materials which are hard to get. If you don't get them argue about it. Warn that inferior materials will mean inferior work.

(6) In making work assignments always sign out the unimportant jobs first. See that the important jobs are assigned to inefficient workers of poor machines.

(7) Insist on perfect work in relatively unimportant products; send back for refinishing those which have the least flaws. Approve other defective parts whose flaws are not visible to the naked eye

(8) Make mistakes in routing so that parts and materials will be sent to the wrong place in the plant.

(9) When training new workers, give incomplete or misleading instructions.

(10) To lower morale and with it, production, be pleasant to inefficient workers; give undeserved promotions. Discriminate against efficient workers; complain unjustly about their work.

(11) Hold conferences when there is more critical work to be done.

(12) Multiply paper work in plausible ways. Start duplicate files.

(13) Multiply the procedures and clearances involved in issuing instructions, pay checks, and so on. See that three people have to approve everything where one would do.

(14) Apply all regulations to the last letter

Depends on how risky the management position is.

I assume the Union doesn't allow its members/represented workers to be fired without cause, so you'll lose that. But if management and the Union aren't constantly at each other's throat and the workers are content with their wages/benefits/work environment you'll probably be fine.

That'll change when upper management starts to be shady and you'll be expected to toe the line but that's a bridge to burn some other day.

Take the position and be an advocate for the workers that report to you.

A manager that sticks up for their team is important, and sometimes tells upper management the things they need to hear (like the word NO) that turn out to be better for the company long term.