Smitha's in this case need not pay any money to break her bond before the 'defined' period. Employment is not 'bonded' in India and she can just leave her job. 'Employment bonds' are no good in the 'court of law' and Smitha can seek employment with other employers by just using her proofs of employment like payslips, job offer letter, if her current employer refuses to relieve her or issue her a salary certificate.
Bonds will only hold good if the employer had spent a substantial amount on the training of the employee (not on-the job).
