Risks of civil unrest to business spike
Risks of civil unrest to business spike · CNBC

The risk of civil unrest disrupting business has risen in one-fifth of the world over the last quarter, with Hong Kong and Ebola-struck Liberia leading the way, according to a new report.

Mass demonstrations, labor protests and ethnic or religious violence have boosted risk in multiple countries, risk consultancy Maplecroft said in its Civil Unrest Index-a quarterly ranking of 197 countries.

Hong Kong posted the biggest deterioration in civil stability due to the mass protests of recent days. The Chinese-administered territory has been rocked by massive street protests against Beijing's tight restrictions on the elections of its next leader, due in 2017.

Maplecroft upped Hong Kong's risk rating to "high" from "medium", and noted that the Chinese government's response to the protests would be crucial in determining whether the situation deteriorated further.

"Even if the current round of protests loses momentum, without concessions to improve the level of democratic accountability... the potential for further civil unrest in Hong Kong will persist, and will likely intensify further in the run-up to the 2017 elections," said the report's authors.

Read More Hong Kong protests face test of stamina

Aside from Hong Kong, Liberia also had its risk rating raised to "high" from "medium", following the outbreak of Ebola in West Africa. The impoverished West African country has suffered violent protests in the wake of the Ebola epidemic, which has claimed around 739 lives in the country to date, according to the World Health Organization.

One example of extreme violence occurred in August, when four people were injured after police fired live rounds and tear gas at those protesting against a quarantine aimed at stemming the spread of the deadly virus.

Read More Ebola epidemic: Which sectors to watch

Maplecroft also upped its risk ratings on Guinea and Sierra Leone-the two other countries worst hit by Ebola. Around 2069 people have died of the virus in Guinea and 623 in Sierra Leone.

"Companies operating in parts of West Africa must not only contend with the direct impact of the Ebola outbreak, but also the operational and logistical challenges created by the heightened potential for incidents of civil unrest," said Maplecroft.

Read More Ebola could infect 1.4 million by January

Charlotte Ingham, principal analyst at Maplecroft, said that monitoring countries with rising levels of unrest should be a "top priority" for business.

"Civil unrest can create significant risks to operations and supply chains and impact the safety of employees and company property," she said in a statement.