You indicated that:

• During the event or exposure the affected employee was in the work environment as an employee, and
• The affected employee’s injury or illness resulted solely from voluntary participation in a wellness program, or in a medical, fitness, or recreational activity.

According to OSHA Regulations 29 CFR 1904.5(b)(2)(iii), this event or exposure appears to be an exception and does NOT have to be recorded.

elaws / OSHA Recordkeeping Advisor / OSHA Web Site