To whom it may concern,
This is to certify that Mr./Ms.（先生/女士）×××(客人姓名) is a ×××(职务) of our company. We understand that he/she(他/她) will have a trip（旅游）/ business trip（商务） / visit relatives（探亲） to USA/ Canada in×××（大约出发年月）, all the expenses occurred during his/her （他/她）visit will be paid by himself/herself/our company/××company（他 / 她 / 本公司 / XXX公司）, and we hereby guarantee that he/she(他/她) will come back in a due time.
Your favorable consideration will be much appreciated
Yours Faithfully,
×××××××××××× （公司名称）
×××（年月日） 此需单位盖公章和负责人签名
2） 第2个样例英文比较地道点 把1+2 个样例整合下就可以出来了
Subject: Tourist Visa Application
We certify that [Mr./Ms.××[Passport No.××] has been employed by [company name××] as a [title] since [month/year].
We have approved [Mr./Ms. ××]’s annual leave from [date/month/year] to [date/month/year]. [Mr./Ms. ××] will resume [his/her] duties with the company on his/her return to Beijing.
We are confident that [Mr./Ms. ××] will return to work on time. The purpose of [Mr./Ms. ××]’s trip is only tourism. [He/She] will not seek any employment or residency in [country name: eg.Germany] and will comply with [eg.German] laws and regulations. 个人觉得大公司这段是不会给证明的，可以删除
We would be very grateful if you would approve [Mr./Ms. ××]’s tourist visa application.
If you have any questions, please do not hesitate to contact me on [Tel no.].
顺便问一下广州花园酒店的泰国大使馆营业时间！！谢！！
除非你是领导级人物，不然没有必要出这个证明把。
要的，基本上签证都要的。
你可以在公司的信纸上写好中英文，然后拿去人事盖章。
单位证明写上你的职务，工资情况。用公司抬头的纸，然后盖公章。
不想这么麻烦的话，带一个存期半年以上，一万元的存折原件外加复印件也可以的！
然后把护照、护照复印件、存折、存折复印件、2张2寸照片带过去领表填单，复印就好了！
复印在三楼的商务中心。
办理签证时间上午的9点到11点半
收费230
网上有模板
通用中英文单位证明
附件：单位证明样本（注：必须带公司抬头的信纸， 下划线部分需要修改）
To whom it may concern,
This is to certify that Mr./Ms.（先生/女士）×××(客人姓名) is a ×××(职务) of our company. We understand that he/she(他/她) will have a trip（旅游）/ business trip（商务） / visit relatives（探亲） to USA/ Canada in×××（大约出发年月）, all the expenses occurred during his/her （他/她）visit will be paid by himself/herself/our company/××company（他 / 她 / 本公司 / XXX公司）, and we hereby guarantee that he/she(他/她) will come back in a due time.
Your favorable consideration will be much appreciated
Yours Faithfully,
×××××××××××× （公司名称）
×××（年月日） 此需单位盖公章和负责人签名
中文翻译如下： 工作证明
兹证明×××先生/小姐是我×××（公司）的×××（职位），我们知道他/她将于×××（大约出发年月）前往美国/加拿大旅游/商务/探亲，这期间所有费用将由其本人/本公司/××公司负责，我单位保证他/她在此次旅游/商务/探亲行程结束后返回中国。
希望能得到您的支持！
非常感谢！ ×××××××××××× （公司名称）
日期 : ×××(年月日)
此需单位盖公章和负责人签名
2） 第2个样例英文比较地道点 把1+2 个样例整合下就可以出来了
Subject: Tourist Visa Application
We certify that [Mr./Ms.××[Passport No.××] has been employed by [company name××] as a [title] since [month/year].
We have approved [Mr./Ms. ××]’s annual leave from [date/month/year] to [date/month/year]. [Mr./Ms. ××] will resume [his/her] duties with the company on his/her return to Beijing.
We are confident that [Mr./Ms. ××] will return to work on time. The purpose of [Mr./Ms. ××]’s trip is only tourism. [He/She] will not seek any employment or residency in [country name: eg.Germany] and will comply with [eg.German] laws and regulations. 个人觉得大公司这段是不会给证明的，可以删除
We would be very grateful if you would approve [Mr./Ms. ××]’s tourist visa application.
If you have any questions, please do not hesitate to contact me on [Tel no.].
Yours sincerely,
[Company Name]
Sign by: [Name] and [Title]
Dated: