In Chamberlain v. Central Vermont Ry. Co., 100 Vt. 284, 137 A. 326, 328 (Vt. 1927), the court addressed the issue of "purely casual employment" and quoted its approval of the rule: "While each case must be largely decided upon its own facts, we believe the Legislature intended that where one is employed to do a particular kind of work, which employment recurs with regularity, and where there is a reasonable ground that such recurrence will continue for a reasonable period of time, such employment is not casual. On the other hand, where the employment for one job cannot be characterized as permanent or periodically regular but occurs by chance, or with the intention and understanding on the part of both employer and employee that it shall not be continuous, it is casual." Id. at 329.