Introduction, philosophy of scientific research in the OB & HR area, theory building, problem definition, Literature Review, new methods and trends, choosing right topic, finding right literature, reading and critical analysis, identifying research gaps, Conceptual framework: concepts, constructs, and variables, positioning variables, hypotheses formulation, Research design in OB & HR research, types and appropriateness, issues and challenges, Qualitative research in OB & HR, theory and approaches, narrative research, phenomenology, ethnography, grounded theory, philosophical assumptions, and interpretive framework, designing and carrying out a qualitative study: challenges, data collection, and interpretation. Survey research in OB & HR, strengths and weaknesses, survey design, scale construction and measurement, common biases: common method bias, self-reporting bias; data collection and interpretation, making meaning out of data; Experimental research; Mixed method research in OB & HR, benefits, challenges.