Section 142.520 - Other Staff Requirements(A) There shall be sufficient professional staff to provide services for safe operation and maintenance of the birth center.(B) Qualified professional staff shall be on duty at all times when clients are present.(C) Professional staff shall be responsible for training and supervision of all non-professional staff, unlicensed staff and volunteers.(D) All staff must have an pre-employment physical exam including tuberculin testing.(E) Prior to employment by the birth center each individual shall demonstrate evidence of immunization to rubella or shall receive a rubella vaccination prior to employment.Amended by Mass Register Issue 1272, eff. 10/24/2014.