It is felt that the company can ask to show the original certificates for varification, but can not keep these as security evn if company issues an acknowledgment.
Company may execute service agreement/bond but does your company provide any training to justify the service agreement/bond.
Is employee provided access to such information that joining any competitor may harm the business interest of your company.
Many companies excercise all options conceived by you and many employees jump the fence and leave. This forum has many threads on such issues.
In the long run inculcicate good HR practices, offer rewarding incentives/R&R structure, growth opportunities,better the remuneration,provide avenues for training and development, and offer job security, provide supportive and effective line management etc...... Introspect and identify why employees leave at first instance. There may be other reasons as well.
The expenses on education have increased manifold and many of the candidates avail loan for getting educated. Good package is indeed need of the hour.
Valuable advice of learned experts/members is soguht.