Performing Melacha on Chol Hamoed that does not involve effort and is not time consuming:[1]

All Melacha [even Biblical in nature[2]] which is not time consuming, and hence involves no effort to perform, is permitted to be performed during Chol Hamoed without restriction. [See footnote for background and other opinions[3]]

• Example: If one needs to perform a simple task, such as lighting a candle or tying a knot, which does not require significant effort or time, it is permitted to do so during Chol Hamoed.

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[1] See Michaber 540:2 and M”A 540:5; Kaf Hachaim 540:15; Some Poskim rule that all Melacha which is not time consuming may be performed without restriction during Chol Hamoed. Others however rule it is

[2] This follows the ruling of Admur in 31:2 that all Melacha on Chol Hamoed is only Rabbinically forbidden.

[3] According to all opinions, all Melacha which is only Rabbinically forbidden may be performed during Chol Hamoed without restriction if it does not involve any effort or time. Thus, according to the ruling of Admur ibid, one may perform all effortless Melacha without restriction. However, according to those who rule or suspect for the opinions who rule that Melacha is Biblically forbidden on Chol Hamoed, then the following dispute is recorded regarding doing Biblical Melacha. Some Poskim rule that all Melacha which is not time consuming may be performed without restriction during Chol Hamoed. Others however rule it is