Georgia’s Reforms Associates website called FactCheck researched this very topic in 2014:
Our research has established that in Georgia certain professions have
nationality restrictions due to national and public interests. In
order to bring in a verdict, we must also take international
experience into consideration. Both strict and lenient, there are
certain restrictions and limitations in Europe, the US and CIS
countries for granting a work permit to foreign citizens.
There are, however, no such limitations in Georgia and any alien can start working in Georgia without any permission (only a temporary
residence permit is necessary after the visa has expired).
Compared to the current situation, the initiated draft bill regulates
the immigration policy of the country.
Based upon the abovementioned, we conclude that the statement of Paata
Kvizhinadze: “Any foreign citizen could work in our country without
any restrictions or quotas. This practically never happens in Europe,
the US or CIS countries,” is TRUE.
Since the old law allowing for 360 days visas has been reapproved in 2015, it is highly likely that there are no employment restrictions for citizens of visa-on-arrival countries.
The 2015 Georgian guideline on legal migration also fails to list any restrictions on people arriving to Georgia on tourist visas.
Moreover, a government website which says "2018" in the footer asserts (emphasis added by me):
The visa policy of Georgia became comparatively liberal, allowing
citizens of 98 countries(table1) to enter, reside, work and study in
Georgia without the necessity to obtain either visa or residence