Haven't decided on your topic yet?
These sources may give you some ideas.
Classification codes are a way of categorizing articles in Business Scholarly & Trade (formerly ABI/INFORM). It can be useful to do a search that combines a classification code (or codes) with keywords or subject terms. You can do this most easily in the Advanced Search mode. Just look for the box for Classification Code.
Codes for HR Issues:
6000 HR Management
6100 HR Planning
6200 Training & Development
6300 Labor Relations
6400 Employee Benefits & Compensation
6500 Employee Problems
nurses AND CC(6300)
This would find articles with the keyword nurses that were also tagged as related to Labor Relations issues.
If you are looking at a research article or an empirical article, the article will most likely also have a Methods or Methodology section.