The 39 Melachot: What Can't You Do on Shabbat?

One of the questions I hear most often from people who are not familiar with Shabbat is: "So what exactly can't you do?" And honestly, it is a fair question. The Torah tells us to rest on the seventh day, but it does not hand us a simple checklist. So where do all the rules come from?

The answer lies in something called the 39 melachot.

Where the 39 Melachot Come From

The Torah says, "You shall not do any work on the Sabbath." But here is the thing: the Torah does not spell out exactly what "work" means. Instead, the sages of the Mishnah and Talmud noticed something crucial. The commandment to keep Shabbat appears right next to the commandment to build the Mishkan (the Tabernacle that the Jewish people carried through the desert).

This is not a coincidence. The rabbis understood that the Torah is teaching us a definition: "work" on Shabbat means the same types of creative, productive activities that were used to build the Mishkan. They identified exactly 39 categories of such work (Mishnah Shabbat 7:2), and these are the 39 melachot.

These are not random restrictions. Each one represents a category of creative human activity, and each one has sub-categories and modern applications. When my students ask me, "Why can't you flip a light switch on Shabbat?" the answer traces back to these 39 categories.

The Complete List of 39 Melachot

The melachot are traditionally organized in groups based on the activities involved in building the Mishkan. Here they are:

Growing and Preparing Food (1-11)

1. Zoreah (Sowing/Planting) — Placing seeds in the ground or doing anything that causes plant growth. Modern example: watering a houseplant or even placing a seed-bearing fruit peel on soil.

2. Choresh (Plowing) — Turning over or softening earth to prepare it for planting. Modern example: digging in a garden or sweeping a dirt floor in a way that creates furrows.

3. Kotzair (Reaping) — Detaching a growing thing from its source of growth. Modern example: picking a flower, pulling a leaf off a tree, or mowing the lawn.

4. Me'amer (Gathering) — Collecting natural products into a bundle at the place where they grew. Modern example: gathering fallen fruit into a pile in an orchard.

5. Dush (Threshing) — Separating a natural product from its natural container. Modern example: squeezing juice from a fruit (in certain contexts) or shelling peanuts.

6. Zoreh (Winnowing) — Using wind or air to separate wanted material from unwanted material. Modern example: blowing on food to remove chaff or debris.

7. Borer (Sorting/Selecting) — Separating undesirable items from a mixture. This is one of the melachot that comes up constantly in daily Shabbat life. You can remove the food you want from a mixture, but you cannot pick out the pieces you do not want. There are specific conditions: you must select the good from the bad, by hand (not with a utensil designed for sorting), and for immediate use.

8. Tochain (Grinding) — Breaking something into small pieces. Modern example: grinding coffee, grating cheese, or mashing a banana (though there are leniencies for certain foods eaten immediately).

9. Miraked (Sifting) — Separating mixed materials using a sieve or strainer. Modern example: using a flour sifter or straining pasta through a colander.

10. Lush (Kneading) — Combining particles with liquid to form a dough or paste. Modern example: mixing baby cereal with water or making a thick batter.

11. Ofeh/Bishul (Baking/Cooking) — Using heat to change the state of food. This covers baking, cooking, frying, boiling, and any heat-based food preparation. Modern example: literally any cooking, but also heating water or reheating food improperly on Shabbat.

Making Fabric and Clothing (12-24)

12. Gozez (Shearing) — Removing hair, wool, or feathers from a living or dead creature. Modern example: cutting hair, shaving, or even pulling out a loose thread.

13. Melabein (Whitening/Bleaching) — Cleaning raw materials or fabrics. Modern example: doing laundry, scrubbing a stain, or wringing out a wet cloth.

14. Menafetz (Disentangling/Combing) — Untangling or aligning fibers. Modern example: combing or brushing tangled hair (which is why many women use special Shabbat-friendly brushes).

15. Tzovayah (Dyeing) — Coloring a material. Modern example: applying makeup, painting, or even spreading colored frosting on a cake in a decorative way.

16. Toveh (Spinning) — Twisting fibers into thread. Modern example: twisting strands together to form a cord.

17. Maisach (Setting the Warp) — Stretching threads onto a loom to prepare for weaving. This category and the next few relate to the weaving process used in the Mishkan.

18. Oseh Batei Nirin (Setting the Heddles) — Arranging the loom threads for the weaving pattern.

19. Oraig (Weaving) — Interlacing threads to create fabric. Modern example: braiding hair (in certain opinions) or any weaving activity.

20. Potzei'ah (Unweaving) — Removing threads from a woven fabric. Modern example: pulling threads out of a hem.

21. Koshair (Tying a Knot) — Creating a permanent or semi-permanent knot. Modern example: tying a knot in a garbage bag or tying shoelaces in a double knot (though standard bow-knots are permitted).

22. Matir (Untying a Knot) — Undoing a permanent or semi-permanent knot.

23. Tofair (Sewing) — Joining two pieces of material with a stitch. Modern example: sewing a button, stapling papers, or using a safety pin to hold fabric together.

24. Koreah (Tearing) — Ripping material for a constructive purpose. Modern example: opening a sealed package or tearing paper. This is why many observant families pre-cut toilet paper or use tissues on Shabbat.

Working with Animal Hides (25-31)

25. Tzud (Trapping) — Capturing a living creature. Modern example: catching a bug, setting a mousetrap, or closing a window to trap a fly.

26. kosher meat">Shochet (Slaughtering) — Taking the life of a living creature. Modern example: killing an insect (though there are exceptions for pests that bite).

27. Mafshit (Skinning) — Removing the hide from an animal. Rarely encountered in modern daily life but applies to any form of skinning or peeling hides.

28. Me'abeid (Tanning/Salting) — Preserving raw materials through salting, curing, or chemical treatment. Modern example: salting foods for preservation purposes or applying certain chemicals to leather.

29. Mesharteit (Tracing Lines) — Drawing guidelines on a surface for cutting. Modern example: drawing a cutting line on paper or fabric.

30. Memacheik (Smoothing/Scraping) — Smoothing or polishing a surface. Modern example: sanding wood, buffing shoes, or applying and smoothing lotion on skin (in certain applications).

31. Mechateich (Cutting to Shape) — Cutting material to a specific size or shape. Modern example: cutting paper to a specific size, trimming nails to shape, or cutting fabric for a pattern.

Writing and Construction (32-39)

32. Kotev (Writing) — Writing or drawing two or more meaningful letters or symbols. Modern example: writing, typing, texting, drawing, or taking a photograph.

33. Mocheik (Erasing) — Erasing writing or marks for the purpose of rewriting. Modern example: using an eraser, deleting text on a screen, or wiping a whiteboard clean.

34. Boneh (Building) — Constructing or adding to a structure. Modern example: assembling furniture, putting up a tent, or even opening an umbrella (which creates a temporary structure).

35. Soser (Demolishing) — Tearing down a structure for the purpose of rebuilding. Modern example: demolishing a wall to renovate.

36. Mechabeh (Extinguishing) — Putting out a fire or flame. Modern example: blowing out a candle, turning off a gas stove, or shutting off a light (since the cooling filament is considered "extinguishing" in certain halachic opinions).

37. Ma'avir (Kindling) — Starting or increasing a fire. Modern example: lighting a match, turning on a light, starting a car engine, or smoking a cigarette.

38. Makeh B'Patish (The Final Hammer Blow) — Completing the making of an object with a finishing touch. Modern example: tearing a perforated edge on paper towels (creating a finished product), removing a price tag from new clothing, or putting the final touch on any craft project.

39. Hotza'ah (Carrying) — Transferring an object from a private domain to a public domain, or vice versa, or carrying four cubits (about six feet) within a public domain. This is why many communities construct an eruv, a symbolic boundary that allows carrying within its borders on Shabbat.

Beyond the 39: Rabbinic Safeguards

The sages did not stop at the 39 biblical melachot. They added additional prohibitions called shevut to create protective fences around the Torah laws. The idea is to keep a person from accidentally stumbling into a Torah violation.

For example, it is rabbinically forbidden to handle objects whose primary use involves a prohibited melacha (these are called muktzeh). You should not discuss business matters on Shabbat. You should not handle money. These are not part of the original 39, but they help create the atmosphere of rest and sanctity that Shabbat is meant to be.

What It Feels Like From the Inside

I know this list can seem overwhelming to someone encountering it for the first time. Thirty-nine categories, each with sub-categories, each with modern applications. It took our greatest sages lifetimes to master these laws.

But here is what I want you to understand: keeping Shabbat does not feel like a list of restrictions. It feels like freedom. For twenty-five hours every week, I put down my phone, step away from the demands of the world, and just exist. I am with my family, with my community, with G-d. No emails, no errands, no rushing.

Every Orthodox Jewish child grows up learning these melachot, and they become second nature. My students know them. My children know them. They are not burdens. They are the architecture of the most beautiful day of the week.