If 70% of businesses reported a change in output, it seems weird to conclude “there’s no impact to productivity” as it concerns an individual business setting policy.
30 increase and 40 decrease which is a conflicting finding.
I see it as evidence to do more granular research. What productivity increase/decrease so you see per company? In what industries? are these based on perceptions or hard metrics? what's the retention rate of companies, and do they correlate?