The top three countries for contingent workforce engagement include Hong Kong, New Zealand and the United States, according the new contingent workforce index released by ManpowerGroup’s (NYSE: MAN) Tapfin division.

The index compares local labor markets in 75 countries and measures the likelihood of identifying and accessing workers to supplement an organization’s full-time workforce. The numerical value assigned to each of the countries composing the index ranks them in descending order based on the availability, cost, regulation and productivity of contingent workers.

Each country in the index is assessed on 36 market conditions and statistics that influence the state of the contingent workforce. The index ranking reflects a cumulative index ranking based on equal weighting of the workforce availability, cost, regulation, and productivity.

"Our clients are operating in an environment where the only certainty is uncertainty, and this creates tremendous complexity when it comes to developing global workforce strategies, especially as it relates to contingent labor planning," said Kip Wright, ManpowerGroup Solutions senior vice president and Tapfin general manager. "The Contingent Workforce Index provides first-of-its-kind insight around contract labor with a country-level look at how contingent labor markets compare to one another."

Here are the top 10 markets for contingent workforce engagement and their index levels:

1. Hong Kong: 3.60
2. New Zealand: 3.54
3. United States: 3.32
4. Australia: 3.22
5. Singapore: 3.19
6. United Arab Emirates: 3.17
7. Malaysia: 3.17
8. Canada: 3.08
9. Thailand: 3.08
10. Uruguay: 3.06