the commission was confronted with conflicting accounts of when claimant’s injury was sustained, and it was up to the commission to decide in which capacity these accounts could be used in awarding or denying claimant compensation. Unlike the practice in civil cases, Rule 2.2 of the Rules of the Workers’ Compensation Commission provides, in part: Except for rules which the Commission promulgates, it is not bound by statutory or common law rules of pleading or evidence nor by technical rules of practice. The Commission will take evidence at hearing and make inquiry into the questions at issue to determine the substantial rights of the parties, and to this end hearsay evidence may be received. See, e.g., Piedmont Manuf. Co. v. East, 17 Va.App. 499, 512-13, 438 S.E.2d 769, 777 (1993) (<HOLDING>); Cox v. Oakwood Mining, Inc., 16 Va.App. 965,
recognizing common law privileges recognizing that zoning agency bodies   are not bound by strict rules of evidence recognizing that commission is not bound by statutory or common law rules of evidence holding statutory authority of commission to promulgate rules to interpret law does not impose affirmative rulemaking requirement recognizing that administrative agencies are not bound by rules of evidence