Japanese companies are apparently keeping calm following the Islamic State hostage crisis that resulted in the brutal murder of two nationals, but crisis management experts say businesses should nonetheless take this opportunity to review how prepared they are for such potential dangers.

Companies contacted by The Japan Times said they alerted their overseas employees about the threat posed by the Islamic State, which recently threatened to target Japanese citizens. But these companies say they have not implemented measures specifically to address the potential danger posed to their employees by the militants.

Energy giant JX Nippon Oil & Gas Exploration Corp., which develops oil, gas and other mineral resources, issued a notice to overseas workers alerting them of the threat, said a spokesman, as part of routine procedures in similar circumstances.