The study investigated the influence of modern office communication facilities on employee job performance in mobile communication Industry in Nigeria. Specifically, the study sought to: investigate the influence of telephone communication on employee job performance in mobile communication Industry in Nigeria; identify the influence of e-mail communication on employee job performance in mobile communication Industry in Nigeria and ascertain the influence of video and web conferencing communication on employee job performance in mobile communication Industry in Nigeria. Research design for this study was descriptive survey. The sample size of 323 respondents was drawn from population 1690 employees from selected mobile communication Industry in Nigeria namely MTN, Globacom, Airtel and 9Mobile. The instrument of data collection was questionnaire. The data analytical techniques were arithmetic mean, standard deviation and student t-test statistics. The empirical results of the study show that mobile phone communication has positive significant influence on employee job performance (t-statistics (6.684) > P-value (0.000), e-mail communication has positive significant influence on employee job performance (t-statistics (5.312) > P-value (0.000) and video and web conferencing communication has positive significant influence on employee job performance (4.312) > P-value (0.000). The study recommended that management of communication industry in Nigeria should adopt the use of telephone in the organization to help fasten the sharing of information among employees and reduce employee moving around to pass information.