Online job listings

This extract lists job postings scraped from the web by Greenwich HR, a human resources intelligence company from the beginning of 2020. According to the company, the data represents more than 70% of the official job listings across various sectors. Raw extract files are obtained weekly from Greenwich HR in .part_00000 files which are read as tables. The extract contain information on company, job details, SIC and NAICS codes, post timestamp, skills sought, etc. SIC codes obtained in the extract are converted to 2 digit NAICS codes by selecting the first two digits and joining with two digits NAICS codes based on [SIC-NAICS crosswalk search results](https://www.naics.com/sic-naics-crosswalk-search-results). Data is aggregated weekly by counties and categorized according to two digit NAICS codes whenever possible. Change in number of listings is based on year on year values compared with weeks beginning the first day of each year. The data was also joined to county-wise montly employment data from Bureau of Labor Statistics.