Thank you for the information and your question. As long as the Company did not publish a notice that employees had to still be employed when the payout of bonuses occurred versus when they were earned, then you have a very strong argument that these are wages due to you. You have a couple of options at this point if the Company will not pay you. One is to file a wage claim with the State. They will ask for the employer's input, investigate and make an attempt to obtain your money if it is due. You can find the form you need at: http://www.com.ohio.gov/documents/dico_MINIMUM_WAGE_COMPLAINT.pdf
There is a slight chance they will not take your claim. They will take it if they consider it as part of your final wages and that they are unpaid. In other words, they don't generally take special pay issues such as vacation pay, etc., but do take minimum wage, overtime, unlawful deductions, and final wages issues. This, arguably, is a final wage issue. Please see their guidance at the link.
The other option is to file a small claims court suit. It is fairly easy and inexpensive to do and the court clerk in your County will have the forms. You will just need to produce any documents (and testimony) that you have establishing your right to the money). The burden would be on the employer to prove they didn't owe it to you.
Please feel free to ask for clarification if needed. If none is needed, then if you could take a moment to leave a positive rating in the box above, I will receive credit for assisting you today. Thank you and Happy Holidays.