The purpose of this research is to investigate the relationship between workplace politics and employee performance of telecommunication firms in Rivers State. The study used descriptive survey design in structured questionnaire to collect data from 400 employees of telecom firms. A total of 4 hypotheses were proposed and statistically tested with Spearman’s Rank Correlation Coefficient. Results revealed that the promotional policy has a positive and weak correlation with employee productivity. It was further revealed that favouritism has a positive and significant correlation with turnover intention. In conclusion, promotional policy in a highly tensed political arrangement tends to reduce employee productivity and at the same time, increase turnover intention that telecom telecom firms who want to improve employee performance should have a standard procedure promoting employees irrespective of the individual involved. This will help improve employee productivity. They should also ensure level playground for all qualified employees that are due for promotion to avoid high employee turnover, which may affect possibility of achieving performance.