Here is a sample certificate of employment you can use.

1. Certificate of Employment
March 6, 2017
To whom it may concern:
This letter is to verify that JUN JACOB C. CASURRA has been employed by THE EVENTS
FACTORY SURIGAO from September 12, 2012 to PRESENT in the position of LEAD
EVENT STYLIST.
During this period the main duties of MR. CASURRA were:
 Conceptualization of Event Design
 Creation of Set Designs and Props
 On-the-day set-up of event design
 Supervision of the event styling team
 Supervision of ingress and egress activities of the event styling team
For a verbal reference please call me on +63-928-3222971
Sincerely,
JANIS J. MEDINA
Proprietor
THE EVENTS FACTORY SURIGAO