1. Direct rejection.
If you don't know how to refuse, the other party will push your luck. There are many monsters in the workplace. If you take a step back, he will take a step forward.
If one day I feel that I have a lot of work and do a lot of things I shouldn't do, then I will review whether I am too accommodating at ordinary times.
2. Do the opposite.
This is euphemistic, but it is also effective. My junior was annoyed by one of her colleagues, so she came up with a good idea.
It happened that when that colleague was busy at work, he always asked for advice from the other side with work that he could not do. After a while, my junior became the one who asked others for help.
3. dress up as a pig and eat a tiger.
Another student's counterattack makes people feel how terrible the workplace struggle is. In fact, his relationship with his colleagues is not good, but competitive. The other party always relies on the work that his predecessor gave him that he shouldn't do. Take the credit for yourself.
In the long run, I will pretend to be a lamb first. Later, on a key project delivered by the other party, my junior made a big mistake. This senior was expelled from the company because he kept saying that he did it himself.