The Kommersant daily, citing a law enforcement source, reported Monday the employee at a firm in the Urals region has been accused of passing on secrets regarding the Bulava intercontinental missile's guidance and control system, RIA Novosti said.
"There is conclusive evidence of his guilt," the source said.
The source said details of the case haven't been disclosed because it involves state secrets.
Experts say the employee may have worked at the Yekaterinburg-based Avtomatika Science and Production Association, which has been developing the missile's control and guidance system.
The trial will be closed because of the sensitive nature of the case, RIA Novosti said.
The Moscow Times reported the 36.8-ton Bulava can travel more than 4,970 miles and carry six to 10 nuclear warheads.
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