+1(514) 937-9445 or Toll-free (Canada & US) +1 (888) 947-9445
But instead *job offer* can I claim 1 year experience under CEC in a normal letter of Employment?

Having 1 year of canadian work experience and a letter of employment to prove it is the minimum requirement to qualify for CEC, if you don´t have that you can´t apply under CEC.