The NYS Department of Labor website has some great basic data - all the things you'd expect such as number of employed full time and part time workforce, unemployment rates, etc. All of this data is searchable by region. For Herkimer and Oneida Counties, you need to look at the Labor Statistics for the Mohawk Valley.
Buried within that page is some interesting data on business expansions and contractions. These are available by county. The Mohawk Valley contains six counties as conceived by the DOL - Fulton, Herkimer, Montgomery, Oneida, Otsego and Schoharie Counties. The data on the website provides information on firm-specific hiring and layoff announcements.
Information in this report is derived from press releases, newspapers,
business journals, newsletters, and other public sources. It does not
include all expansions and contractions, only those for which public
information has been obtained. An attempt is made to present only
current information events that have recently occurred or will in the
near future.
So while there is some limitation to what it is that you can see, it still provides a nice summary of what businesses have been (at least publicly) expanding or contracting.