Chol Hamoed
1. One must honor the Chol Hamoed by wearing clothes and eating meals that are fitting for more than an ordinary weekday.
2. For necessities of the community, one may do all types of work. This would include, perhaps, even building a shul. Each case has to be treated separately.
3. All types of work that one is forbidden to perform, one may not instruct a non-Jew to do for him.
4. Unskilled work, such as attaching a button or such is permitted. Likewise, to assemble items that don’t require extra work, etc., would be permitted.
5. Regarding food required for Chol Hamoed and Yom Tov, work is permitted.
6. Business and work is permitted only if one would suffer a loss of principle by refraining, i.e. he could lose his job, he has no vacation time left and the money is important for necessities.
7. Chol Hamoed was given to us to enjoy the Yom Tov. It should be spent properly.