Ordinarily the following types of requirements may be considered reasonable, depending on the circumstances in which they are applied and the effect of their application:

(a) Period of prior membership. It would ordinarily be reasonable for a local union to require a candidate to have been a member of the organization for a reasonable period of time, not exceeding two years, before the election. However, if a member is involuntarily compelled to transfer from one local to another, such a requirement would not be reasonable if he is not given credit for his prior period of membership.

(b) Continuity of good standing. A requirement of continuous good standing based on punctual payment of dues will be considered a reasonable qualification only if (1) it provides a reasonable grace period during which members may make up missed payments without loss of eligibility for office, 24 and (2) the period of time involved is reasonable. What are reasonable periods of time for these purposes will depend upon the circumstances. Section 401(e) of the Act provides that a member whose dues have been withheld by the employer for payment to the labor organization pursuant to his voluntary authorization provided for in a collective bargaining agreement may not be declared ineligible to vote or be a candidate for office by reason of alleged delay or default in the payment of dues. If during the period allowed for payment of dues in order to remain in good standing, a member on a dues checkoff system has no earnings from which dues can be withheld, section 401(e) does not relieve the member of the responsibility of paying his dues in order to remain in good standing.