Employment Reference unavailable

I am completing a SF85P. All my contacts and references and Credit are great. In addition, I have no criminal history. My one concern is that I have no Supervisor reference for a contract position, held less that 1 year. The 2 possibilities are no longer with the company, and I can’t seem to get ahold of them.
Will this put my Clearance at risk?

List the company and their HR department.

Like @amberbunny said, put down whatever info you have that was current as of the time you left.

I had a part-time job at a business that since closed and everyone (I think) was transferred to other locations. I put down the address and supervisor as of the last day I worked there.

Okay… thank you for your help!

Yes, will do… thank you for your help!