A non-shomer Shabbat Jew may be counted as part of a minyan.
 

You may trust that the food a shomer Shabbat Jew serves is kosher without your needing to check it out.
However, if a shomer Shabbat host serves non-kosher food or food without reliable supervision on foods that need supervision, you may not eat it.

Kaddish is only said for 11 months for a shomer Shabbat Jew and 12 months for a non-shomer-Shabbat Jew.

A non-shomer Shabbat Jew may not be a sofer.

A non-Jew or non-shomer Shabbat Jew may not handle wine (or grape juice) once the juice has been separated from the lees (the remaining solid parts of the grapes).

No mashgiach is needed if:

• The owner of wine production and all of the workers are shomer Shabbat, and
• No non-Jews or non-shomer Shabbat Jews come in contact with the wine or grape juice.

 

Hatarat nedarim (nullification of vows) should be done before Rosh Hashana (but it may be done any time of the year) in front of three adult male shomer-Shabbat Jews. You may make a condition that you never want to make a vow of any type, but this might not be effective or valid.  The formula may be said in English or any other spoken language.

A Jewish wedding requires four pairs of witnesses, but the same witnesses may be used for all four parts: tanayim; ketuba; kiddushin; yichud. Each witness must be:

• A shomer-Shabbat, adult male,
• Not related to the bride or groom,
• Not related to each other, and
• Known to be an honest person.

You may be a minority owner or shareholder in a business that violates Torah law, but not if the majority of the business is owned by Jews (even if they are not shomer Shabbat Jews). Consult a rabbi for details and exceptions.
 

A father should circumcise his male children (if he knows how to do to the circumcision!) or appoint someone to do so. Order of preference for who should do the circumcision, if competent:

• Father
• Other shomer-Shabbat male
• Shomer-Shabbat woman (if no male is available).

Ba'alei teshuva often have problems with issues of kashrut in their parents' homes. Pots, dishes, and utensils might not be kosher or toveled. Consult a rabbi. Questions of bishul akum (cooking that was done by a non-Jew) might apply to non-shomer Shabbat parents, but the custom is to be lenient.

If the parent's kitchen is known to be non-kosher, food must be prepared with care (see How To Use a Non-Kosher Kitchen). If the parents do not lie to their children, they may be trusted as to the source of food and its kosher status.

Since we may not eat from dishes or utensils that have not been toveled (immersed in a mikva), you may  want to consider toveling your parents' dishes or utensils, or using disposable goods. In such cases, it is OK to use china that has not been toveled.

The purpose of the rabbi at a wedding is to ensure that the extremely detailed wedding halachot, as set out by the Shulchan Aruch, are followed correctly. If not, the wedding might not be kosher.
 
A Jewish marriage includes: a written document (ketuba); a financial transaction (ring) in front of two kosher witnesses; and physical intimacy. 
 
Witnesses
 

• The witnesses must be shomer Shabbat Jewish men.
• The bride and groom should confirm verbally that these are the two (and the only two) witnesses that they want.  

 
Ring

• The groom must confirm that he acquired and owns the ring.
• The groom must say Harei at mekudeshet li ...  to the bride and place the ring on her (index) finger.

 
Ketuba

• The ketuba must be kosher.
• Before the chuppa, someone (anyone, including women) must fill in (no safrut is required for this):  the Hebrew names of the bride and groom; the date the wedding is taking place; the wedding location (city, etc.); and that a kinyan was made.
• The ketuba must be signed by two kosher witnesses.

The principal difference between kosher wine (or grape juice) and non-kosher wine (or grape juice) is that the kosher wine must be produced and handled only by religious Jews. However, once the wine or grape juice has been cooked (“mevushal”), it may be handled by anyone, including people who are not Jewish, and it will still remain kosher. Pasteurization may be sufficient to be considered “cooking” for this purpose.
 
Note Many good-quality wines are NOT mevushal and when those bottles are opened must not be handled by anyone who is not a shomer Shabbat Jew.

Shabbat was the goal of Creation. Just as God completed the world's creation on the sixth day and ceased His work on the seventh, so Jews are supposed to imitate God and not do any creative work on the seventh day. Everything we need for living through Shabbat must be prepared ahead so that we do not do any creative activities on Shabbat.
Our observance of Shabbat thus testifies that God created the world. In the Shabbat kiddush, we mention the Exodus from Egypt, too, to testify to the world that God is continuously involved in our lives.
By ceasing our normal efforts to dominate the physical world, we can appreciate the spiritual aspects of our existence.
On Shabbat, all observant (shomer Shabbat) Jews receive an extra “soul.”

Zachor and Shamor

Remember (Zachor) the Sabbath day to make it holy—Exodus/Shmot 20:8
Observe (Shamor) the Sabbath day to make it holy—Deuteronomy/Devarim 5:12
Shabbat has two dimensions:

• Zachor  “Remember,” encompassing positive (“to do”) commandments, and
• Shamor  “Observe,” encompassing negative (“refrain from”) commandments.

Zachor:  Positive Shabbat Commandments
What Are Positive Shabbat Commandments
Positive Shabbat commandments include:

• Lighting candles,
• Making kiddush evening and morning,
• Making havdala,
• Honoring Shabbat (Kivod Shabbat), and
• Enjoying Shabbat (Oneg Shabbat), including eating three meals on Shabbat.

Honoring Shabbat: Special Food and Clothes
Honoring Shabbat includes eating tasty food and wearing nice clothes.

Shamor: Negative Shabbat Commandments
Shabbat Laws from the Torah (Shabbat D'Oraita)
What Are Melachot
On the Jewish day of rest, we refrain from 39 creative activities (melachot) that had been used to build the Tabernacle in the wilderness. These 39 melachot, prohibited by the Torah, are listed in the mishna of Shabbat and in later halacha books.

The word melacha is frequently mistranslated as “work,” but work has nothing to do with the Jewish concept of melacha. Some melachot are physically strenuous (plowing, grinding wheat, skinning an animal) and some are easy to do (drawing, baking). The defining point is whether the activity is one of the 39 creative, value-adding labors. Emptying your pockets before leaving an eruv (so you are not “carrying”) may seem confusing to someone who thinks that resting on Shabbat means refraining only from hard physical labor!

What Are Toldot
Toldot are variations of the 39 melachot. These types of melacha are also prohibited by the Torah.

Intention and Other Considerations
Most Torah (d'oraita) prohibitions of melacha on Shabbat are for cases in which you:
            1) Intend a permanent change.
                Often, actions that may be forbidden when they cause permanent change, will
                be permissible by Torah law if the result is only temporary. Or
            2) Intend or act for a specific purpose.
                Random or unintended actions are generally not prohibited by Torah law.
                (However, actions that are not prohibited by the Torah, may be prohibited
                by Chazal.)

Whether you may benefit from a melacha done on Shabbat depends on intention:

• A Jew who intentionally does a melacha on Shabbat may never benefit from that melacha.

            Note Any other Jew may benefit from that melacha as soon as Shabbat is over.

• A Jew who does melacha on Shabbat by mistake (shogeg) may benefit from that melacha immediately after Shabbat ends.

In order to violate a prohibited melacha d'oraita, the melacha must be done as follows. If any of these do not apply, then the melacha is forbidden d'rabanan but not d'oraita:

• K'darko--The action must be done in a normal way.
• Tzorech tikun—The action must be done for a constructive purpose.
• Tzricha l'gufa--You must need the normal result of that action.
• Asiya b'yachid—The action must be done by one individual (if commonly done by just one person).
• Mit'aseik--You must realize that you are doing a melacha.

 
Shabbat Laws from Chazal (Shabbat D'Rabanan)
Chazal instituted additional restrictions, such as:

• Activities that might lead directly to violating a Torah prohibition.
• Use of items not designated for Shabbat use (muktza). For a good explanation of muktza from the TorahTots website, please click here.
• Activities that might lead one to think that a prohibited activity is permissible (mar'it ayin--the appearance of the eye).
• Activities that are not appropriate for Shabbat, even though they are technically permissible according to the Torah (“uvda d'chol”).
• Tircha--Exerting a physical effort to accomplish a result that is not required for Shabbat.

Enjoying Shabbat/Oneg Shabbat
Chazal instituted laws to engender a positive Shabbat atmosphere and experience.  Beyond the actual halachot of shamor and zachor, we have a concept of enjoying Shabbat (oneg Shabbat)—of enhancing our experience of Shabbat by doing whatever each person finds to be enjoyable and relaxing--as long as it is neither destructive nor violates the laws of Shabbat. The criteria are subjective. To fulfill the idea of honoring Shabbat, do things you would not do just for yourself if it were not Shabbat. Take essential life activities such as eating and sleeping and do them more and better and make them especially enjoyable.

Meals as Oneg
On Shabbat, we eat better foods and more types of food than we would normally do on weekdays.
The main idea behind meals for Shabbat is enjoyment (oneg; by contrast, the main idea for Jewish festivals is joy--simcha), so on Shabbat you should eat bread and either fish, poultry, or meat (but only if you enjoy them).
In order to have a special appetite for our Shabbat evening meal, we don't eat a full meal with bread on Friday afternoon.

Special Shabbat Songs (Zmirot)
Special songs (zmirot) are sung at the various Shabbat meals. Some zmirot have an aspect of prayer to them.

Studying Torah
Studying Torah on Shabbat is another way of increasing our spiritual experience. It honors the Shabbat and should bring about enjoyment of Shabbat.

Shabbat and Muktza
For information on Shabbat and muktza, see section below, Shabbat: Muktza.

Weekday Talk
Don't talk about subjects that are forbidden to do on Shabbat (weekday subjects); for example, don't talk about what you will do after Shabbat is over. There is no prohibition about discussing actions from the past as long as no planning is discussed.

Lashon ha'ra is saying (or communicating in any way--even by rolling your eyes, winking, etc.) anything derogatory or negative about someone that can hurt him or her in any way--by causing embarrassment, loss of money, lowered esteem, bad reputation, etc. 
 
Lashon ha'ra in which you attribute the negative statement about the person to whom you are speaking to someone else is called rechilut (gossip). 
 
Lashon ha'ra that is false is called motzi shem ra. Saying something that is true is not lashon ha'ra if it is being said for a positive purpose (even though the same words would be lashon ha'ra if they were only intended to hurt another person and had no positive purpose).
 
Lashon ha'ra, including rechilut, is forbidden to be said about shomer Shabbat Jews except for a positive purpose; motzi shem ra is forbidden to say about anyone--Jewish or not, shomer Shabbat or not, whether for a positive purpose or not.
 
Speaking Lashon HaRa
 
When You May Say Lashon HaRa
Lashon ha'ra, including rechilut, even if truthful, is not permitted except for a constructive or positive purpose. (Motzi shem ra is never permitted.) Its purpose cannot be to hurt a person.  It is permitted and recommended to tell the facts about someone:

1. To protect others from being hurt (being cheated, molested, etc.), or
2.  For a positive purpose that cannot be achieved through any other means.

 
Lashon HaRa To Protect Others from Being Hurt
You may say truthful lashon ha'ra (including rechilut, if it is necessary to divulge the name of the person who told you):

• To prevent a bad person from telling children bad things or to keep children from learning bad behavior from the bad person;
• To avoid being implicated in what the bad person is doing;

• To prevent other Jews' suffering a loss by using a worker who did bad work for you.

• If a businessman cheats you or lies to you, you should warn other Jews about him (but only if you suspect they want to do business with him).
• If you know something bad about someone who a third person wants to date or marry, in many cases you are required to tell what you know (but this can be very complicated and dangerous and a rabbi should be consulted about what to do in many cases)!

 
When You May Add Facts to Correct Possible Lashon HaRa
If the reasons behind an action are not clear and someone may get the wrong/negative impression of someone in question, then you should tell the facts and tell the entire story. 
Example
Someone (A) insults another person (B) in public. Entire story is that B beat up A previously. Knowing the full story changes how people might view A.
Note If it is only your opinion, state that instead of declaring it as fact.
 
Lashon HaRa To Allow Gain
Saying lashon ha'ra for a positive purpose includes gain for yourself or for someone else; you may talk about others in cases such as these:

• Psychotherapy  You may say truthful lashon ha'ra or rechilut to a psychotherapist since you don't know what is important. Outside of therapy and with non-therapists, you may say anything that will bring about a positive result (and only if there is no other way to achieve that result).

   

• Upset  If you are upset by what a person did to you and it will help you to calm down by telling what was done to you (that is, you will gain by feeling better).

 
Note If you want to ask someone for information that could be lashon ha'ra, you should say why you are asking so the other person will understand that it is for a positive purpose and is therefore not lashon ha'ra.
 
 
Lashon HaRa and Specific Cases
 
Children, Shomer Shabbat Person, Groups
Even truthful lashon ha'ra, including rechilut, may not be said about a Jewish child or a shomer Shabbat person or group of people unless for a positive purpose that cannot be achieved any other way.

• A parent should not rebuke or criticize a child if it will embarrass the child in front of others.
• A child (whether young or adult) may not correct a parent who is saying lashon ha'ra, unless the parent would want to be reminded that the parent is saying lashon ha'ra. Even then, it must be done respectfully. 
• You may make statements about groups of people in general, even if negative, as long as the purpose is to protect other people from them. But what you say must be true.   

 
Lashon HaRa: Public Knowledge
You may mention information that is public knowledge. But your intent should not be to spread the word, but rather just to pass along interesting information.
Example
Saying, “Did you hear that the president of the synagogue just got convicted of...”
 
Lashon HaRa: Mass Media
You may read in the paper, see on TV, or hear on the radio an account of someone's bad behavior (since you cannot know whether it will affect you or be important for you to know until you read or hear the information, it may be OK; ask a rabbi). You may not accept it as being the complete truth, but you should be wary.
 
Lashon HaRa: Shomer Shabbat Public Figure
You may not tell or listen to lashon ha'ra about a public figure who is a shomer Shabbat Jew unless there is a purpose.
You may give your opinion about a shomer Shabbat politician as long as you state it as your opinion and as long as giving your opinion may help other people.
 
Lashon HaRa: Shomer Shabbat Organization
You may not say any of the three types of speaking ill about an organization, school, synagogue, etc., whose members or employees are shomer Shabbat--except for a positive purpose.
Examples
You may not say any of the three types of lashon ha'ra about a Jewish school's cost, bad teachers, etc., unless it may be relevant to future students (and even if it is relevant, you may still not say motzi shem ra).
You may not say, “I don't like that shul because there is lots of talking,” unless you think the person will appreciate knowing since he or she will not want to go to a shul with lots of talking.
 
Lashon HaRa: Asked for Opinion
If you are asked for your opinion, you may give it if it is relevant (has a useful purpose) to the person asking. Otherwise, no comment.
 
If you are asked your opinion about a Torah lecture or lecturer, you may give your opinion only AS your opinion, not as criticism.
 
Lashon HaRa: Told in Confidence
If you have been told something in confidence, even if you think it is best for the person who told you if you pass it along, you may still not re-tell anyone else. You may say, “I cannot speak about that” if you are asked. Consult a rabbi.
 
Lashon HaRa: Getting Back at Someone
If someone hurts you, you may get back at the person at the time of the action against you.  But afterward, it would be revenge and is forbidden.
Example
Someone tells you, “You are good for nothing.” You may say, “You are worse than I am,” if it makes you feel better.
 
Lashon HaRa: Bet Din Summons
If someone with whom you have a problem refuses a hazmana (summons) from a bet din, you may publicize a letter from the bet din saying the person refused the hazmana so that the recipient might agree to go to the bet din due to public embarrassment.
 
Lashon HaRa: Bet Din for Abuse
All matters between Jews should, ideally, initially go to bet din but only if the bet din is capable of resolving the problem. In cases of suspected child or spousal (or other) abuse, you may report it to the police if there is no bet din that is capable of dealing with the problem immediately: You are not required to wait while a bet din gets around to your case. The key is to expedite the case.
Note Some cities have special batei din for such matters.
Note Beware of governmental agencies that may take away children from their homes, even without evidence.
 
Listening to and Believing Lashon HaRa
Listening to and believing any category of lashon ha'ra is also forbidden. If you do hear something bad about someone else, do not believe that it is definitely true--but you may believe that it might be true. When you hear lashon ha'ra:

• You can try to change the subject, since pointing out that lashon ha'ra is being said may not stop it from being said.
• If you see a shomer Shabbat Jew doing something that seems to be forbidden, you should judge him/her favorably and assume that there is a good interpretation to what is being done.

Example
Situation
You see someone who is not shomer mitzvot get in a car on Shabbat.
What To Do
Make the logical assumption that he/she is going to drive (and not for a halachically permissible purpose).
Situation
You see a shomer Shabbat person get in a car on Shabbat.
What To Do
Assume there is a good, halachic reason for it. However, you may not ignore reality or make implausible or unlikely excuses for bad behavior.