Keep a positive attitude:
Going through safety precautions to protect yourself against a sabotaging co-worker is a wise move. Identify and conform the source of damage. If you suspect that a co-worker is getting credit for your work or undermining you in other ways, then make sure it is really happening, and not just all in your head. In doing this, you should maintain written records of your job responsibilities and the ideas you contribute. Most of time, workplace stress may skew perspectives, so make sure to take a step back and look at the situation objectively.
Avoid the drama:
A niggling worker is someone who is out to disturb, distract, and annoy you. It may be because they like your job position, competing with you for an important promotion, or simply desire to be the office head and will hurt everyone else to get there. You do not have to be drug into their dramatic world; you can simply carry out your job responsibility and try to prevent feeding them bait to sabotage you.
Do not lose your personality:
Instead of becoming stressed at the situation and disappointing yourself while trying to find the humor in it; show others that you are often good at what you do. This may prevent others who are trying to spoil your hard work simply by taking the credit at the workplace. This will help you remain at the front of the line and will be praised by higher authorities.
Maintain communication with co-workers:
Communication is the ideal option; it can help you talk calmly to the workers who are damaging your reputation, as well as competing with you for a better position. This is one of the best ways to think calmly, and maintain everything in the right sequence. This is the time to set up a meeting with the senior authority of the company. If it is something that truly affects your professional career, then you should speak up and fix the problem. By setting up a meeting with the managers, you can get the best options to solve the problem of damaging co-workers. A number of professionals have experienced this sort of situation; you should take their suggestions and confirmations to save your job.