I was laid off in the previous financial year working as a software engineer for a firm. I worked as an Independent Contributor, that means I had no supervisory powers, I had no say in hiring, firing or any budget approvals. Neither did I have any people reporting to me. My work was only skill-based execution. 

I was paid two months of my salary as severance. 

I was issued a termination letter that clearly mentions, "<company> will duly settle your full and final payment within the appropriate time frame,
including payment in lieu of notice, arrears of accrued but unpaid salary up to the
Separation Date, compensation for any accrued but unused holidays, retrenchment
compensation, and any other accrued contractual dues, as applicable. These payments are
made in accordance with the applicable law and are subject to any applicable deductions
and withholdings."

Can I consider myself as a workman under The Industrial Disputes Act 1947 and claim tax exemptions on my severance salary under section 10(10B)?